# Version 4.3.40 (2016-08-22)

This is a maintenance release. The following items were fixed and/or added:

- Storage: fixed a possible endless reconnect loop for the iSCSI backend if connecting to the target succeeds but further I/O requests cause a disconnect

- Storage: fixed a bug when resizing certain VDI images which resulted in using the whole disk on the host (bug #15582)

- SDK: reduced memory usage in the webservice Java bindings

- Linux hosts: fix for Linux 4.5 if CONFIG_NET_CLS_ACT is enabled (bug #15327)

- Linux hosts: EL 6.8 fix (ticket #15411)

- Linux hosts: Linux 4.7 fix (bug #15459)

- Windows hosts: hardening fixes

## Version 4.3.38 (2016-04-19)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a problem which could lead to a wrong guest behavior on AMD CPUs (bugs #14831 and #15186)

- NAT Network: fixed 100% CPU load in VBoxNetNAT on Mac OS X under certain circumstances (bug #15223)

- BIOS: fixed int15/AH=83/AL=00 function (4.2.0 regression)

- Linux hosts / guests: Linux 4.5 fixes (bug #15251)

- Linux hosts / guests: Linux 4.6 fixes (bug #15298)

- Windows hosts: fixed Python installation path (bug #13131)

- Windows hosts / guests: properly sign binaries using a sha-256 certificate (bug #15024)

- Windows hosts: hardening fixes required for recent Windows 10 insider builds (bugs #14052, #15245 and #15296)

- Windows Additions: fixed sporadical failure of the graphics driver in Windows 10 guests (bug #14409)

- Windows Additions: fixed a hang with PowerPoint 2010 and the WDDM drivers if Aero is disabled

## Version 4.3.36 (2016-01-19)

This is a maintenance release. The following items were fixed and/or added:

- GUI: improved handling of text selection mouse pointer (bug #750)

- GUI: properly limit the number of VCPUs to the number of physical cores on Mac OS X (bug #15018)

- 3D: fixed state handling under certain conditions (bug #13487)

- Host services: fixed a crash during VM shutdown under rare conditions (4.3.32 regression; bug #14841)

- ExtPack: black-list Extension Packs older than 4.3.30 due to incompatible changes not being properly handled in the past

- Linux hosts: .desktop file compatibility issue (bug #14808)

- Linux hosts / guests: fixes for RHEL 7.2 (bug #14866)

- Linux/Mac OS X hosts: fixed a VM hang during startup under certain circumstances (bug #14933)

- Linux Additions: prevent the compiler from doing dead-code elemination on vital code in guest / host communication (bug #14497)

- Linux Additions: fixes for Linux 4.5 (bug #15032)

- X11 Additions: added basic support for X.Org Server 1.18 (3D requires additional fixes)

## Version 4.3.34 (2015-11-10)

This is a maintenance release. The following items were fixed and/or added:

- NAT: support TCP in DNS proxy (bug #14736)

- NAT Network: fixed sporadic crashes on Windows hosts (bug #13899)

- USB: fixed a crash under certain conditions on hosts with Linux kernels older than version 3.3

- OVF: fixed duplicate USB controller entries in exported OVA/OVF (bug #14749)

- Webcam: passthrough fix for certain devices (Windows hosts only)

- Mac OS X hosts: use the correct kernel on certain hosts

- Windows hosts: fixes for a shared folder path with extended-length path prefix (bug #14651)

## Version 4.3.32 (2015-10-20)

This is a maintenance release. The following items were fixed and/or added:

- Bridged Networking: fix handling of guest DHCP requests without UDP checksum when bridging to a wireless interface (bug #14615).

- VRDP: allow Windows 10 RDP clients (bug #14216)

- Mac OS X hosts: another fix for hosts with activated SMAP (Broadwell and later; bug #13951)

- Windows hosts: hardening fixes

- Linux hosts: check then name space before attaching to a host network interface (bug #13795)

- Linux hosts: fixed VM_INVALID_STATE Guru Meditation on Linux 4.2 kernels (bug #14531)

- Linux hosts: more SMAP fixes

- Linux hosts: Linux 4.2 fix

- Linux hosts: Linux 4.3 compile fixes

- Linux hosts: installer fix for certain systems (bug #14627)

- Linux Additions: Linux 4.2 fixes (bug #14227)

- Linux Additions: improved the performance of stat() to speed up certain file operations on shared folders

- Linux Additions: be more forgiving if the compilation of the vboxvideo module fails

- Windows Additions: fixed a potential crash in the WDDM driver with Windows 10 (bug #14190)

- Windows Additions: fixed video playback with VLC and Windows Media Player when the WDDM driver is used and 3D is not enabled

- Windows Additions: fixed problems with 3D acceleration on Windows hosts with Intel HD graphics (bug #14670)

- X11 Additions: fixed a crash on log-out with the KDM display manager (bug #14341)

## Version 4.3.30 (2015-07-10)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a hang under rare conditions on 32-bit hosts

- VMM: fixed a bug while diagnosing VERR_VMX_INVALID_GUEST_STATE Gurus Meditations (VT-x only)

- GUI: allow to save the VM state from the selector even if the VM is already paused

- API: OS type description consistency fix (bug #14162)

- API: fixed incorrect resuming of VMs on host-resume unless they were previously paused due to a host-suspend

- API: fixed several bugs when cloning a VM having a saved state

- NAT: fixed several potential crashes

- Netsniffer: properly handle changing of the trace file name at VM runtime

- USB: some improvements for passing through audio devices (headsets etc)

- Audio: fixed audio output and input when changing the default audio device more than once on OS X

- Audio: fixed audio input on OS X under certain circumstances

- VRDP: fixed a couple of races which may cause a crash during VM poweroff

- ExtPack: don't fail if the TMP directory contains non-latin1 characters (bug #14159)

- SDK: fixed a memory leak in the Java bindings (bug #13647)

- Linux hosts: fixed a bug which made the netfilter driver ignore certain events (bug #12264)

- Mac OS X hosts: fixed a bug which might trigger a host kernel panic if a VM is started and another hypervisor is active

- Mac OS X hosts: several El-Capitan fixes

- X11 Additions: fixed wrong DPI value with certain guests (4.3.28 regression; bug #14151)

- Solaris Additions: added quiesce support to co-operate with Solaris' fast-reboot feature

## Version 4.3.28 (2015-05-13)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a Guru Meditation when rebooting certain guests (for example Solaris doing fast reboot) by fixing the implementation for INIT IPI

- VMM: added some information for diagnosing rare VERR_VMX_INVALID_VMXON_PTR Guru Meditations (VT-x only)

- GUI: HID LEDs sync: prevent synchronization if VM window has no focus (Windows and Mac OS X hosts only)

- GUI: fixed drag and drop moving the cursor between guest screens on certain hosts

- 3D: fixed a crash on restoring the VM state on X11 hosts (bug #12737)

- 3D: fixed a crash on restoring the VM state

- 3D: fixed a crash on Linux guest shutdown (bug #12772)

- VRDP: fixed incompatibility with rdesktop 1.8.3

- VRDP: fixed listening for IPv6 on some systems (bug #14038)

- Storage: don't crash if creating an asynchronous I/O context fails (e.g. when starting many VMs) and show a proper error message

- Floppy: several fixes

- Audio: improved the behavior of the volume control for the HD audio device emulation

- USB: increase the number of supported drivers from 3 to 5 (Windows hosts only)

- PS/2 keyboard: synchronize the LED state on VM restore (Windows and Mac OS X hosts only)

- NAT Network: when running multiple NAT networks with multiple VMs, only stop the respective services when stopping VMs (bug #14090)

- NAT: don't kill UDP bindings on ICMP errors (bug #13475)

- NAT: bandwidth limit now works properly with NAT (bug #11485)

- BIOS: fixed the returned size value of the VBE 2.0 PMI function 0Ah (4.2.0 regression; bug #14096)

- Guest Control: fixed parameter quoting in Windows guests (bug #13157)

- Webcam passthrough improvements for Linux (V4L2) hosts to support more webcam models

- API: don't fail starting a VM with VBOX_E_INVALID_OBJECT_STATE under certain conditions (bug #13617)

- API: be more verbose on VBOX_E_INVALID_OBJECT_STATE if a medium is attached to a running VM (bug #13560)

- API: fixed a bug which could result in losing certain screen resize events with multi-monitor guests

- rdesktop-vrdp: fixed path to the keymaps (bug #12066)

- rdesktop-vrdp: switch to version 1.8.3

- Windows hosts: more hardening fixes (e.g. bugs #14051, #14052)

- Linux hosts: another fix for activated SMAP on Linux 3.19 and newer (Broadwell and later; bug #13961)

- Linux hosts: Linux 4.1 compile fix (bug #14081)

- Solaris hosts: fixed using of VNIC templates with Crossbow based bridged networking to be compatible with vanity interface names

- Mac OS X hosts: fixed crash during VM termination under rare circumstances

- Windows Additions/WDDM: improved video memory utilization and allow more/bigger guest screens with large resolutions (including HiDPI)

- X11 Additions: prevent flickering when updating mouse cursor

- Solaris Additions: fixed incorrect usage of 'prtconf' while installing Guest Additions (Solaris 10 only)

## Version 4.3.26 (2015-03-16)

This is a maintenance release. The following items were fixed and/or added:

- GUI: in the snapshots pane, protect the age of snapshots against wrong host time (bug #13955)

- NAT Network: fixed a bug which prevented to propagate any DNS name server / domain / search string information to the NAT network (4.3.24 regression; bugs #13915, #13918)

- NAT Network: don't delay the shutdown of VBoxSVC on Windows hosts

- Mouse support: the mouse could not be moved under rare conditions if no Guest Additions are installed (4.3.24 regression; bug #13935)

- Storage: if the guest ejects a virtual CD/DVD medium, make the change permanent (bugs #9858, #12885)

- VGA: made saving secondary screen sizes possible in X11 guests

- SDK: fixed the VirtualBox.tlb file (4.3.20 regression; bug #13943)

- rdesktop-vrdp: make it work with USB devices again (4.3.14 regression; bug #13901)

- USB: fixed a possible BSOD on Windows hosts under rare conditions

- iPXE: enable the HTTP download protocol on non-Linux hosts (bug #13628)

- Mac OS X hosts: don't panic on hosts with activated SMAP (Broadwell and later; bug #13951)

- Linux hosts: don't crash Linux 4.0 hosts (bug #13835)

## Version 4.3.24 (2015-03-02)

This is a maintenance release. The following items were fixed and/or added:

- VMM: emulation fix for the ENTER instruction under certain conditions; fixes Solaris 10 guests (VT-x without unrestricted guest execution)

- VMM: fix for handling NMIs on Linux hosts with X2APIC enabled

- NAT/NAT Network: fix connection drops when the host's DHCP lease was renewed (4.3.22 regression; Windows hosts only; bug #13839)

- NAT: don't crash on an empty domain list when switching the DNS host configuration (4.3.22 regression; Mac OS X hosts only; bug #13874)

- PXE: re-enable it on Windows hosts (4.3.22 regression; Windows hosts only; bug #13842)

- Shared Folders: fixed a problem with Windows guests (4.3.22 regression; bug #13786)

- Audio: improved record quality when using the DirectSound audio backend

- VBoxManage: when executing the controlvm command take care that the corresponding VM runtime changes are saved permanently (bug #13892)

- Windows Installer: properly install the 32-bit version of VBoxRes.dll on 32-bit hosts (bug #13876)

- Linux hosts / guests: Linux 4.0 fixes (bug #13835)

- OS/2 Additions: fixed mouse integration (4.3.22 regression; bug #13825)

## Version 4.3.22 (2015-02-12)

This is a maintenance release. The following items were fixed and/or added:

- VMM: refined measurement of TSC frequency on the host, improves timekeeping for guests

- VMM: decreased CPU load resulting from guest MMIO writes to the virtual APIC

- VMM: fixed interception of debug exceptions, observed while using the dbx debugger on Solaris guests (VT-x only)

- GUI: 3D overlay window positioning code improved, fixed potential misplacement of 3D accelerated guest graphics content

- GUI: fixed accident SSL authentication failures during update check on Windows hosts (bug #12969)

- GUI: never send the "ACPI power" keyboard scancode to the guest, we have the ACPI power button for that

- GUI: was unable to properly restore seamless mode VM from snapshot/saved-state under some circumstances

- VBoxHeadless: don't crash if 3D is enabled in the VM settings (bug #10250)

- ATA: fixed several passthrough issues (bugs #12310, #1360)

- Audio: fixed DirectSound failure when the the host has no audio input device (Windows hosts only; bug #9205)

- SB16: fixed compatibility issue (bug #13769)

- Storage: fixed broken CD/DVD passthrough when using the IDE controller (bug #12310)

- NAT: new ping proxy for Windows hosts (bug #11871)

- NAT: Properly report outbound connect(2) failures to guest with TCP RST or ICMP (bug #10525)

- NAT Network: no need for frequent wakeups in VBoxNetDHCP and VBoxNetNAT (bug #11681)

- Host-only adapter: prevent Windows from creating an "Unidentified network" (bug #9688)

- Bridged Networking: don't leak host-to-guest traffic to the wireless network when bridging to a wireless interface (bug #13714)

- Main: fixed a possible race when changing the medium leading to a deadlock under rare conditions (bug #13722)

- VBoxManage: fixed return code if starting a VM failed (bug #13773)

- Settings: on Windows host, do not use environment variable HOME at all, the settings location is derived from the user profile directory (bug #7689)

- API: fixed 2 deadlock opportunities related to medium handling (bugs #13789, #13801, thank you Alexander Urakov)

- API: fixed bug in XPCOM which created too few worker threads, sporadically resulting in a deadlock (bug #13802, thank you Alexander Urakov)

- SDK: fixed a garbage collection leak in the Python VirtualBox webservice API binding (bug #13817)

- Linux hosts: fixes for activated SMAP (Broadwell and later, bug #13820)

- X11 guests: prevent unwanted hiding of guest screens on multi-monitor guests (bug #13287)

- X11 guests: added support for X.Org Server 1.17

- X11 Additions: fixed a memory leak in VBoxService if libdbus is available but dbus-daemon isn't running (bug #13770)

- Windows Additions: prevent VBox WDDM driver from loading if host reports weak OpenGL capabilities. 3D content now can be shown over Remote Desktop connection.

- Winodws Additions: some fixes for recent Windows 10 Previews

- Linux Additions: fixed a compatibility issue with 64-bit Linux 2.4 kernels

- Linux Additions: fixed a potential use-after-free when unloading the VBoxGuest module

- Linux Additions: Linux 3.19 fixes (bug #13741)

## Version 4.3.20 (2014-11-21)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed reboot hang of 32-bit Windows SMP guests (bugs #13319, #13462)

- VMM: proper Math Fault handling with certain legacy guests (bug #9042, AMD hosts)

- VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT on older CPUs that don't support MSR-bitmaps (VT-x only; bugs #13034, #13125, #13311, #13425, #13426, #13463, #13585)

- GUI: fix 3D overlay window reparenting issue when VM goes to fullscreen mode on X11 hosts.

- GUI: fix occasional loss of focus in full-screen mode on X11 host systems (4.3.16 regression)

- GUI: Mac OS X: wizards should have Cancel button (bug #12541)

- GUI: added a global option to prevent automatic raising of the new window by mouse move with multi-screen guests (bug #8878)

- API: accept remote display port 0 as the default RDP port (bug #8534)

- VBoxManage: fixed crash when executing showvminfo command under certain circumstances (bug #13190)

- ACPI: fixed occassional Guru Meditations in ACPI timer code (4.3.18 regression; bug #13521)

- EFI: improved performance of IDE disk access

- EFI: fixed a bug in the EFI video driver which prevented Windows to boot in UEFI mode (bug #12022)

- EFI: properly announce the amount of RAM for big VMs (bugs #11103 and #13211)

- Storage: fixed a crash under certain cicrumstances when a medium was ejected from a drive attached to the SATA controller without inserting a new medium before pausing or closing the VM (4.3.16 regression)

- Storage: fixed an interrupt acknowledge issue causing hanging guests or slower I/O (4.3.18 regression)

- Storage: fixed broken resume after the VM was suspended due to a full disk if host I/O caching is used

- Storage: fixed a Guru Meditation under certain conditions when using the DevLsiLogic controller with VMs running in raw mode (4.3 regression; bugs #12254, #12655, #12709, #12774, #12886)

- Guest Control: fixed a bug which might lead to a crash during recursive copy

- SDK: Java COM bindings fixes

- iPXE: enable the HTTP download protocol (bug #13628)

- Runtime: do not use a fixed stack size creating temporary threads during initialization (bug #13038)

- Windows hosts: fixed more startup problems on certain Windows hosts due to conflicts with anti-virus software; better error reporting (4.3.14 regression; bug #13187)

- Windows hosts: fixed DirectSound host audio failure under certain conditions (bug #13418)

- Windows hosts: fixed additional cases of 4.3.14 regression whereby AltGr stopped working for some people (bug #13216)

- Windows Additions: preserve guest monitor layout when resizing Windows 7 or newer guests

- Linux Additions: Linux 3.18 compile fixes (bug #13515)

## Version 4.3.18 (2014-10-10)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a potential misbehavior after restoring the A20 state from a saved state

- GUI: fixed full-screen mode mini-toolbar related regressions for different platforms and window managers (bug #13369)

- GUI: X11: fixed full-screen mode Unity panels quirk caused by mini-toolbar code changes in last release (bug #13365)

- GUI: X11: added possibility to use legacy full-screen mode as the new one can cause multi-screen issues under Unity, see legacy-fullscreen-mode (bug #13365)

- GUI: Mac OS X: fixed full-screen mode artifact causing black screen when 3D acceleration was enabled on 10.10 Yosemite hosts (bug #13448)

- GUI: Mac OS X: fixed regression in user-space swiping from/to VBox in full-screen mode

- GUI: Mac OS X: fixed issue with switching to VBox in full-screen mode through Alt+Tab and Mission Control

- Storage: fixed data corruption when resizing huge VHD images under certain circumstances (bug #11960)

- Storage: fixed a rare hang during startup when the BIOS enumerates the storage devices attached to the SATA controller

- Storage: follow the spec with AHCI interrupt acknowledge (bug #13474)

- Storage: fixed broken iSCSI authentication (4.3.14 regression, bugs #13386, #13435)

- NAT Network: properly parse port forwarding rules to allow UDP rules

- USB: fixed a crash on Linux hosts with older Linux kernels (bug #13400) and several other fixes

- ACPI: fixed ACPI timer anomalies (bug #12076)

- Guest Control: fixed a memory leak (bug #13434)

- Main: when removing a VM, do also remove the VBoxStartup.log file which might exist on Windows hosts (bug #13478)

- Windows hosts: fixed more startup problems on certain Windows hosts due to conflicts with anti-virus software; better error reporting (4.3.14 regression; bug #13187)

- Windows hosts: propagate the process startup information to the child process (4.3.14 regression; bug #13243)

- Mac OS X hosts: don't force using the discrete GPU (bug #11111)

- Windows Additions: some Windows 10 tweaks

- X11 guests: fix a bug handling video driver display properties which prevented GNOME Shell on Fedora 21 from starting

- Linux hosts / guests: fixed a few remaining warnings in the kernel log if memory allocation fails (bug #11171)

## Version 4.3.16 (2014-09-09)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed restoring 32-bit FPU state on 64-bit capable VMs and restoring guest FPU in raw-mode VMs (bug #12646; 4.3 regression)

- GUI: properly restore normal/scale mode guest-screen size after exiting full-screen/seamless mode

- GUI: mini-toolbar should provoke less artifacts/conflicts with 3D guest rendering

- GUI: Mac OS X: Native full-screen multi-screen transition was able to blackout host-screens for nearly minute

- GUI: X11: Modern window managers should now use native full-screen multi-screen mapping API

- GUI: added extradata item for configuring the mouse capture behavior, see mouse-capture (bug #3506)

- Storage: fixed a VBoxSVC crash when querying an iSCSI target with authentication configured (4.3.14 regression)

- Storage: fixed a rare data corruption during reads if another allocating write is running concurrently and accesses the same range

- Storage: fixed a rare crash for certain VHD images from other products

- Storage: fixed a rare release assertion when using the AHCI controller

- Floppy: fixed read errors and guest memory corruption when running under control of QEMM

- 3D: added experimental support for rendering on offline GPUs for Mac OS X host

- 3D: fixed white window appearing on entering FullScreen mode on Mac OS X host

- 3D: fixed video recording support for 3D data regression (bug #13073)

- 3D: fixes for MS Office 2013 support

- 3D: several fixes

- Bridged Networking: improved IPv6 support when bridging to a wireless interface

- NAT: prevent internal DNS service from stuck in host-resolver mode when host was switched from one network to another one while host was sleeping (Mac OS X hosts)

- NAT: preserve DF (if possible) and TOS when proxying outbound UDP datagrams (bugs #9440, #12309)

- NAT: don't let multicast datagrams out (bug #7338)

- NAT: fixed handling of large incoming UDP datagrams on Windows hosts (bug #12136)

- NAT: fixed handling of the RFC 1533 DHCP PAD option

- NAT Network: fixed inbound half-close on Windows hosts

- NAT Network: preserve IPv4 DF (if possible), TTL, TOS and IPv6 Hop Limit when proxying outbound UDP datagrams

- VRDP: fixed a rare crash when using remote audio input

- USB: fixed several regressions from 4.3.14 (bug #13320)

- Audio: made the HDA sound emulation work with certain Mac OS X guests (e.g. Mountain Lion)

- Windows hosts: fixed startup problems on certain Windows hosts due to conflicts with anti-virus software (4.3.14 regression; bug #13187)

- Windows hosts: fixed 4.3.14 regression whereby AltGr stopped working for some people (bug #13216)

- X11 hosts: made the extra key on Brazilian Thinkpads work (bug #8745)

- X11 hosts: fixed a problem of input focus cycles and immediately released key presses in full screen mode (bug #13238)

- Linux hosts: fixed flooding the kernel log with USB related messages when passing through certain USB devices to a VM (bug #13085)

- Linux guests: stop applications crashing when drm_wait_vblank is called (bug #13265)

- Linux guests: fix a crash in gnome-session (bug #13335)

- X11 guests: do not start VBoxClient over an SSH connection (bug #13107)

- X11 guests: added support for X.Org Server 1.16 (bug #13207)

- X11 guests: fixed a wrong parameter in the video driver which caused problems with full-screen X11 clients (bug #2748)

- VirtualKD: introduced stub/loader device for speeding up Windows kernel debugging, details see http://virtualkd.sysprogs.org/

## Version 4.3.14 (2014-07-15)

This is a maintenance release. The following items were fixed and/or added:

- VMM: more fixes for MSR emulation on certain hardware (bugs #12784, #12949, #13034)

- VMM: improve MSI handling under rare circumstances (only relevant for the ICH9 chipset)

- VMM: fixed #UD exception for 64-bit guests with the EFER.SCE bit and the SYSCALL instruction (VT-x only; 4.3 regression; bug #13008)

- VMM: fixed timekeeping after resuming SMP guests

- VMM: properly wake up a halted VCPU on NMI/SMI

- GUI: fixed a potential crash

- GUI: fixed stuck AltGr key on Windows hosts (bug #2537)

- GUI: fixed a potential error during the version check

- GUI: shortcut change should not require Enter/Return (or other trigger) to confirm (bugs #12828, #12847, #12937, #13087)

- GUI: fixed update check which was broken due to changing the location of the root certificates (bug #13096)

- VBoxManage: fixed typo in showvminfo --machinereadable (bug #13176)

- NAT: fixed inbound half-close (bug #13116)

- NAT: fixed slow upload speed under certain conditions (bug #10034)

- NAT Network: fixed potential loss of inbound TCP data

- NAT Network: fixed potential infinite stalls of TCP connections over IPv6

- NAT Network: fixed resets of TCP connections on Windows hosts

- NAT Network: fixed inbound half-close on Mac OS X hosts

- NAT Network: fixed socket leak on Solaris hosts

- NAT Network: fixed ping of mapped host loopback on Mac OS X and Solaris hosts, fixed proxying of IMCP errors on Mac OS X

- Host-Only Network: fixed SNMP ifConnectorPresent value on Windows (bug #13143)

- Storage: fixed a possible crash with CD/DVD passthrough under certain circumstances

- Storage: fixed a crash when trying to open an inaccessible QED or QCOW image (bug #12613)

- Storage: fixed data corruption or read errors under rare circumstances

- AHCI: fixed a crash under rare circumstances

- USB: performance fixes

- ICH9: properly reset MSI capability on reset

- Keyboard: active modifier keys during suspend were stuck after resuming the host

- 3D: fixed misbehavior with huge guests (i.e. guest more than 4GB guest memory

- 3D: several fixes

- API: properly detect the Windows 8.1 guest OS type (bug #13090)

- ExtPack: cleanup of dangling uninstallation directories

- Linux hosts / guests: compile fix for EL7 (bug #12638)

- Linux Additions: made 3D pass-through work with recent versions of Mesa in the guest (bug #12941)

- Linux Additions: Linux 3.16 fixes (bug #13123)

- Mac OS X hosts: when scanning for host CD/DVD devices also consider BlueRay devices

- Mac OS X hosts: fixed host shutdown and reboot delay caused by running VBoxSVC process in some cases.

- OS/2 Additions: fixed gengradd.dll library name (bug #12785)

- Solaris Additions: fixed permissions of files and directories located on shared folders

- Windows host installer: fixed the need for rebooting Windows after installation or upgrade, extended logging for NetFlt/NetAdp (un)installation

## Version 4.3.12 (2014-05-16)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed an occasional Guru Meditation (Mac OS X hosts only; bugs #12727, #12954)

- VMM: fixed a rare condition that would fail to invalidate guest TLB entries or would invalidate them when not required (Windows hosts only)

- VMM: fixed a VERR_NOT_SUPPORTED Guru Meditation seen with certain guests, e.g. OpenServer 5.0.7

- VMM: more fixes for MSR emulation on certain hardware (bugs #12240, #12875)

- GUI: fixed mouse positioning with mouse integration disabled and multiple guest screens (Windows hosts only; bug #9059)

- GUI: fixed crash in VM manager (bug #12878)

- GUI: fixed crash under rare conditions on entering/exiting full-screen/seamless mode

- Shared Clipboard: don't stop working after taking a snapshot (bug #12700)

- AHCI: fixed a crash under rare circumstances

- API: fixed a hang during VM shutdown under rare conditions

- NAT: fixed generation of malformed ICMP error datagrams (4.3.10 regression)

- NAT: fixed potential crash in DNS proxy

- NAT Network: don't drop port forwarding rules after some time

- NAT: fixed ARP cache corruption and network loss in Windows guest caused by iSCSI service activity

- USB: improved check if a storage device is currently mounted to the host when the device is about to be attached to the VM (Mac OS X hosts only; #11038)

- 3D support: several fixes, including better support for Ubuntu 14.04

- VRDP: fixed a potential crash on client disconnect (bug #12858)

- VBoxSVC: fixed a race when a new client is started a few seconds after the last client terminated (Windows hosts only; bugs #11309, #12509)

- VBoxSVC: fixed VirtualBox.xml registry corruption after VM renaming

- VBoxSVC: fixed a potential crash caused by incorrect USB device filter (Mac OS X hosts only; #11038)

- Windows hosts: partly support 32-bit COM on 64-bit systems

- Windows host installer: implemented merge module (msm) support

- Linux hosts: fixed dependency of boot script on older Debian systems (bug #12262)

- Linux guests: fix symbolic link to shared folder helper (bug #12879)

- Linux Additions: don't crash VBoxService during guest execute for users without a password (bug #12994)

- Linux Additions: fixed a bug in guest execution where the guest process terminated with VERR_INTERRUPTED to the host

## Version 4.3.10 (2014-03-26)

This is a maintenance release. The following items were fixed and/or added:

- VMM: more work on improving the emulation of certain MSR registers on certain host CPUs (e.g. bugs #12734, #12736, #12744, #12748, #12686, #12770)

- VMM: fixed single-stepping for real-mode guests (VT-x without unrestricted guest execution) and some I/O instructions (bug #12636)

- VMM: fixed a potential problem with COW pages if nested paging is not available

- GUI: Mac OS X: experimental native full screen support for Mountain Lion and Mavericks (bug #12292)

- GUI: Mac OS X: removed the mini-toolbar minimize button which doesn't work under Mac OS X full screen mode anyway

- GUI: experimental HID LEDs synchronization for Windows and Mac OS X hosts: fixed keyboard re-synchronization if the feature is disabled (as done by default; bug #12758)

- GUI: fixed a potential crash when opening the preferences menu (bug #12862)

- OVF: fixed a crash of the VirtualBox Manager when re-starting guest export (bug #12586)

- 3D support: several fixes

- HGCM: fixed a problem with saved states which could cause several guest misbehavior after a VM was started from a saved state

- Storage: fixed a bug preventing to compact differential snapshots under certain conditions

- VBoxSVC: fixed a segmentation fault on Linux hosts if a very long path exists under /dev (bug #12760)

- API: fixed guest misbehavior under certain conditions if a storage medium was attached or removed at VM runtime

- Windows installer: make the --silent parameter work again (bug #12764)

- Mac OS X Networking: prevent local traffic (VM-to/from-host) from leaking to wire (bug #12750)

- Windows Additions: fixed the environment for guest processes (4.3.8 regression; bug #12782)

- Windows Additions/WDDM: fixed divide by zero exception with multiple guest screens under certain conditions

- Windows Additions/WDDM: fixed crashes with 2D video acceleration enabled (4.3.8 regression; bug #12745)

- Linux Additions: install correctly on Ubuntu guest systems with a /usr/lib64 directory (bug #12513)

- X11 Additions: fix for the VBoxClient process not exiting correctly (bug #12348) and consuming too much processor time

## Version 4.3.8 (2014-02-25)

This is a maintenance release. The following items were fixed and/or added:

- VMM: more work on improving the emulation of certain MSR registers (e.g. bugs #12224, #12544)

- VMM: fixed a VERR_INVALID_RPL Guru Meditation when booting certain guests (bug #11350)

- VMM: experimental support for SSE 4.1 / SSE 4.2 passthrough, see sse412passthrough how to enable it (bug #8651)

- VMM: fix for recent Linux kernels with software virtualization

- GUI: experimental HID LEDs synchronization for Windows hosts, see hidledssync

- GUI: warn the user if the Oracle Extension Pack is not installed and the user tries to activate the remote display feature (bug #9104)

- GUI: make sure that a minimized guest (using mini toolbar in full screen / seamless mode) keeps the minimized state (bug #12199)

- GUI: popup banner's "do not show this message again" check-box replaced with corresponding button

- GUI: network adapter cables can now be connected/disconnected directly through the running virtual machine Devices / Network menu a Network status-bar indicator

- GUI: the new VM wizard now proposes 64-bit guests on 64-bit hosts by default; better distinction between 32-bit OS types 64-bit OS types (bug #12533)

- GUI: better error message if appliance import fails (bug #12657)

- GUI: allow to set host-combination to 'None' using the Global settings / Input page (bug #12730)

- GUI: don't switch the guest to a black screen during online snapshot merge (4.3 regression)

- VBoxManage: when exporting an appliance, support the suppression of MAC addresses, which means they will be always recreated on import, avoiding duplicate MAC addresses for VMs which are imported several times

- AHCI: fixed a VM hang during suspend under certain circumstances

- AHCI: fixed a VM hang during online snapshot merge under certain circumstances

- AHCI: fixed a bug which resulted in Windows XP guest hangs if a SATA CDROM is attached (bug #12417)

- AHCI: fixed a Guru Meditation under certain conditions

- AHCI: ejecting a CD/DVD medium failed under certain conditions

- AHCI: disk hotplugging fixes

- NAT: transparent handling of host sleep/resume and network configuration changes if the dnsproxy is enabled or if the hostresolver is used (bug #12441)

- NAT: fixed crash and misbehaviour under some circumstances with ICMP packets having TTL=1

- NAT Network: fixed IPv6 reassembly

- NAT Network: ping proxy implemented

- OVF: fixed reading of the OVF 0.9 section element (4.3 regression; bug #12345)

- OVF: several fixes

- 3D support: several fixes, multiscreen fixes (e.g. bug #9124)

- 3D support: include 3D content in captured videos (bug #12666)

- 3D support: include 3D content in captured screenshot (bug #11758)

- VGA: proper handling of legacy graphics modes if the Guest Additions are active (bug #6649)

- USB: fixed crash during isochronous transfer under rare circumstances

- BIOS: better disk geometry handling of SCSI drives

- API: fix crashes in Java API clients using the XPCOM binding, happened with output parameters only (bug #11232)

- VBoxSVC: documented the handling of host power management events (see hostpowertweaks) and added an extradata item for configuring the handling of the battery-low event (bug #9925)

- VBoxSVC: fixed a bug which could trigger a crash if a VM snapshot was restored the second time and the VM has associated bandwidth groups (bug #12569)

- VBoxSVC: properly detect ifconfig if located in /bin (bug #12713)

- Shared Folders: fixed a failure to restore transient shared folders when starting a VM from a saved state (bug #12578)

- Mac OS X hosts: fixed issue when the application icon was frozen in the dock if the bridging interface was not connected to a network (bug #12241)

- Linux hosts: also consider the physical package ID when determining the number of physical CPU cores

- Linux hosts / guests: don't warn in kernel log if memory allocation fails (bug #11171)

- Solaris hosts: fixed the autostart SMF script (bug #11720)

- Windows hosts: fixes for non-ANSI code page user names and similar environment contents (bug #12596)

- Windows hosts / guests: fixed setting and using a guest user's process environment variables (relevant for Guest Control)

- Windows Additions: fixed handle leaks in VBoxTray (bug #12563)

- Windows Additions: fixed a crash while detecting active guest users

- Windows Additions: fixed restoring backed up D3D files on XPDM -> WDDM upgrade

- Guest Control: fixed setting and using a guest user's process environment variables

- Linux Additions: support Enterprise Linux 6.5 kernels (bug #12505)

- Linux Additions: fixed CPU hot-remove on newer Linux kernels

- Linux / Solaris Additions: don't automount a shared folder which is already mounted

- X11 Additions: support X.Org Server 1.15 (bug #12623)

## Version 4.3.6 (2013-12-18)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a Guru Meditation VINF_EM_TRIPLE_FAULT caused by VMCB caching with nested paging on certain AMD CPUs (bug #12451)

- VMM: fixed a Guru Meditation VERR_VMX_UNEXPECTED_INTERRUPTION_EXIT_TYPE while intercepting debug exceptions (VT-x only; bug #12410)

- VMM: fixed a Guru Meditation VERR_SVM_UNEXPECTED_EXIT while intercepting debug register accesses (AMD-V only; bug #12481)

- VMM: fixed a VERR_SSM_STRUCTURE_MAGIC error when trying to load a saved state made with VBox 4.3.4 when VT-x/AMD-V is disabled. Unfortunately, VBox 4.3.4 produced broken saved states for this configuration so you have to discard these states (bug #12414)

- VMM: added a few more MSRs to the whitelist required by certain guests (bug #12245)

- GUI: fixed deleting of inaccessible VMs (4.3 regression; bug #12205)

- GUI: fixed warnings in VM settings / number of guest processors (bug #12480)

- Main: don't automatically enable 64-bit guests on 64-bit hosts if VT-x/AMD-V is not available (bug #12424)

- Main: always expose the DMI memory information to Windows 2012 guests (bug #12017)

- Main: fixed occasional crashes on guest display resolution change (bug #7063)

- Main: fixed reporting back temporary name when calling IGuestSession::DirectoryCreateTemp() (bug #12498)

- API: fix for a hang when launching a GUI VM through the API, which crashes due to GUI unavailability

- Storage: fix for BLKCACHE_IOERR runtime errors under rare circumstances (bug #11030)

- Network: allow to start more than 5 PCNet instances (bug #12426)

- E1000: if the cable was disconnected before the guest initialized the device, the link status was not properly set to 'down' after the initialization completed despite the fact that there was no connection

- 3D support: fixed offset of guest 3D image elements (Mac OS X Retina hosts only; bug #11021)

- Solaris hosts: fixed accessing the host driver from non-global zones (4.3 regression; bug #12271)

## Version 4.3.4 (2013-11-29)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fix for a bug in the Local APIC emulation causing a BSOD when booting certain guests (4.3.0 regression; bug #12240)

- VMM: fixed loading of saved states if VT-x/AMD-V was disabled (4.3.2 regression; bug #12291)

- VMM: fixed single-stepping inside the guest for certain instructions (VT-x only; bug #10947)

- VMM: fixed a performance issue involving APIC accesses after rebooting a VM (4.3.0 regression; VT-x only; bug #12296)

- VMM: fixed TPR patching to be enabled for 32-bit guests even when the chosen guest type is 64-bit (4.3.0 regression; AMD-V only)

- VMM: fixed occasional VINF_EM_TRIPLE_FAULT errors on hosts without the unrestricted guest execution feature (bug #12198)

- GUI: don't bother the user with the BPP warning if no Guest Additions are installed

- GUI: fixed machine-window paint artifacts on VM reboot / guest-screen resize

- GUI: make sure the assigned license and description are attached to the exported appliance

- GUI: fixed bugs in close VM action restrictions handling (bug #12333)

- GUI: fixed incorrect wizards text colors for some unusual look and feel styles (bug #11743)

- GUI: should restore seamless mode as soon as possible after VM reboot or shutdown

- GUI: fixes for medium enumeration

- GUI: the OS X hot corners were not accessible while a VirtualBox VM is running (Mac OS X hosts only; bug #4139)

- GUI: fixed an old bug which bared the host from cleanly shutdown / reboot if the VM selector window is open (Mac OS X hosts only; bug #8254)

- Host-only Networking: fixed creating of host-only network interfaces (4.3.0 regression; bug #12182)

- NAT: don't run into an infinite loop in case the host cannot access any DNS server (4.3.0 regression; bug #12300)

- NAT: don't re-connect the cable if the DNS information changes and the cable was disconnected before (4.3.0 regression; bug #12225)

- NAT: fixed several issues with automatically starting / terminating of NAT networks on VM start / stop and configuration changes

- VBoxNetDHCP: don't block prevent VBoxSVC from terminating (bug #12264)

- 2D Video acceleration: fix crashes on presentation mode switches (bug #9194)

- BusLogic: allow to run VMs with more than one BusLogic SCSI controller enabled

- Keyboard: fixed a VM crash if a VM was resumed from a saved state where at least one key was pressed (bug #11289)

- VBoxSVC: fixed a heap corruption under certain conditions (4.3.0 regression)

- VBoxSVC: fixed a race leading to a hang during initialization (bug #12349)

- OVF: fixed import logic for OVF appliances containing multiple VMs

- OVF: improved logic for finding an appropriate image format during OVF import

- API: block the removal of the current snapshot if it has child snapshots (only relevant for VMs without snapshottable hard disks, their presence always prevented removal), which resulted in VM config corruption

- API: mark VM configs with snapshots but without current snapshot as inaccessible, as this combination is nonsense

- API: fixed information for some automatically generated events (only with XPCOM, Windows host was not affected), which caused errors when getting some of the attributes over the webservice (bug #12379)

- SDK: extended the functionality coverage for the C bindings

- Guest Control: various bugfixes and improved VBoxManage help (bugs #8072, #11044, #12336, #12338, #12346, #12371)

- Windows hosts: another attempt to fix the massive DPC latency (bug #6242)

- Windows host installer: make registering file extensions optional, contributed by Tal Aloni (bug #8009)

- Mac OS X hosts: properly sign the kernel extensions for Mavericks hosts (bug #12256)

- Mac OS X hosts: fixed a bug where the VirtualBox dock icon was not properly removed from the dock after a VM terminated preventing Mavericks hosts from shutting down (bug #12241)

- Mac OS X hosts: fixed minor installer issue (bug #12275)

- Linux hosts / guests: Linux 3.13 compile fixes (bug #12358)

- Linux guests: build the vboxvideo kernel module correctly on OL/RHEL 6.1 guests (bug #11996)

- Linux guests: make 3D work on Slackware 14.1 (bug #12320 comments 3 and 4)

- Guest Additions/3D: fixed an occasional dead-lock (bug #12319)

- Windows Additions/3D: fixed possible memory leaking (bug #12228)

- Windows Additions/XPDM: use separate tables containing valid video modes for each virtual monitor

- Windows Additions: fixed automatic logins for Vista and newer Windows guests (bug #12332)

## Version 4.3.2 (2013-11-01)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed restoring of the auxiliary TSC MSR in VT-x that caused host BSODs on Windows 8.1 hosts and unpredictable behavior on other hosts (bug #12237)

- VMM: provide fake values for a couple of MSRs to make more guests happy on certain hosts

- VMM: fixed detection of VT-x on certain machines where the BIOS would not set the VMX LOCK feature bit, which affected the VM settings in the GUI

- VMM: fixed TPR threshold which caused BSODs on Windows XP guests that use the I/O APIC (VT-x only; bug #12227)

- VMM: fixed PATM saved state incompatibility for software virtualized VMs (bug #12222)

- VMM: don't fail if AMD-V isn't available if the VM is configured to use software virtualization

- GUI: fixed guest resize breakage on visual representation mode change (when switching from normal to full screen etc)

- GUI: make sure the guest screen is resized after restoring a VM from a saved state if the host screen size changed

- GUI: disabled SCROLL LED sync from HID LEDs synchronization (Mac OS X hosts only)

- Webcam passthrough improvements including GUI support (see webcam-passthrough)

- Guest Control: implemented more `IGuestSession` methods

- Guest Control: added support for deleting and renaming guest files + directories in VBoxManage

- Guest Control: various bugfixes

- API: incorrect handling of hardware UUID default value, resulting in an all zero DMI/SMBIOS UUID, which leads to Windows requesting re-activation (4.3 regression; bug #12244)

- 3D support: fixed crash on shutdown if 2D video acceleration is enabled (Mac OS X hosts only)

- 3D support: miscellaneous fixes

- Storage: fixed detection of CD/DVD media when switching from an empty to a host drive with passthrough enabled

- Storage: fixed hang of the VM process when the disk is full under certain circumstances

- NAT: listen for changes of NAT Network setting at runtime

- NAT: NAT Network DHCP server now saves leases to a persistent storage

- Main: monitor changes in host DNS configuration

- Mac OS X host: reworked a mechanism of adding a VM desktop alias from the VM selector

- Mac OS X installer: remove old kernel extensions during upgrade (bug #12258)

- Linux Additions: correctly set umask before installing (bug #12166)

- X11 Additions/3D: fix freezes starting 3D desktop (bug #11503, thank you Sam Spilsbury)

- X11 Additions/3D: fix depth buffer support (bug #11905)

- X11 Additions/3D: fix Age Of Empires 3 rendering (bug #11331)

- Windows Additions/3D: fix Google Earth plugin rendering

- Windows Additions/WDDM: autoresize fixes

## Version 4.3.0 (2013-10-15)

This is a major update. The following major new features were added:

- VMM: major rewrite of the VT-x code and the AMD-V code including many bug fixes and performance improvements (for example bug #9659)

- VMM: introduced a lightweight instruction interpreter for situations not handled by hardware virtualization

- GUI: extended messaging mechanism (new non-modal popup overlays used to show non-critical warnings and provide user with additional information)

- GUI: keyboard shortcuts management (input page of global preferences extended with possibility to edit general keyboard shortcuts for VirtualBox Manager and Virtual Machine)

- GUI: video capturing support (bug #4766)

- Added USB touch device emulation

- Added experimental support for webcam passthrough complementing USB passthrough (see webcam-passthrough)

- Added SCSI CD-ROM emulation, including boot support

- VRDP: support for IPv6

- Guest Control: guest sessions now are running in dedicated, impersonated session processes (needs at least Guest Additions 4.3 installed)

- Guest Control: implemented `IGuestFile` support

- NAT: experimental virtual router mode: several VMs are attached to the same internal network and share one NAT service (see network_nat_service)

In addition, the following items were fixed and/or added:

- VMM: significantly improved performance of NetWare 5.x/6.x guests on host systems without nested paging support

- VMM: fixed losing host NMIs while in VT-x guest-context

- VMM: changed order of actions in emulated task switch (bug #10532)

- VMM: allow to activate VT-x while in SMX mode and provide more information if that is not possible

- GUI: update check uses https

- GUI: numerous minor internal cleanups and bug fixes

- GUI: HID LEDs synchronization when switching between guest window(s) and host (Mac OS X hosts only)

- GUI, VBoxManage: when unregistering a VM, also unregister the hard disk images which are used exclusively (bug #10311)

- GUI: use the number of physical presented processor cores instead of the number of logical processor cores to check if the users assigned too many virtual CPUs to the guest

- Snapshots: made live snapshots work again (bug #9255)

- Teleportation: made it work again (bug #9455)

- Storage: implemented AHA-154x compatibility mode in the emulated BusLogic SCSI HBA

- Storage: significantly improved performance of large ATAPI PIO transfers (BeOS, Minix 3 guests affected)

- Storage: added floppy formatting emulation (NB: cannot be used to change existing media geometry)

- Settings: global and per-VM default frontend configuration, useful to select the use of alternative VM frontends

- Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes

- Settings: the per-VM hwvirtextexcl setting has been replaced by a global hwvirtexclusive property

- Main: new event queue implementation which does not use the host's native event queue for processing VirtualBox events anymore

- Main: eliminate the use of SysV semaphores on all host OSes other than Windows, namely Linux, Solaris and Mac OS X, with the consequence that no system reconfiguration is needed to run more than approximately 100 VMs

- Main: use the XDG standard configuration folder instead of .VirtualBox on systems where it is appropriate (bug #5099)

- Main: extension pack framework can now support loading HGCM modules, contributed by Jeff Westphal

- VBoxManage: list more information about hard disk/DVD/floppy media, and support the `--long` option to show really all available details

- VBoxManage: added support for optional command line parameters for the automatic Guest Additions update

- VBoxManage: added support for listing active guest sessions, guest processes and/or guest files via `guestcontrol list <all|sessions|processes|files>`

- VBoxManage: added support for closing active guest sessions via `guestcontrol session close --session-id <ID>| --session-name <name or pattern>|--all`

- VBoxManage: added support for terminating active guest processes via `guestcontrol process kill|close|terminate --session-id <ID>| --session-name <name or pattern> <PID> ... <PID n>` or `guestcontrol [p[s]]kill --session-id <ID>| --session-name <name or pattern> <PID> ... <PID n>`

- VBoxManage: added support for watching guest sessions via `guestcontrol watch`

- VBoxManage: added `modifyvm --triplefaultreset` to make the VM reset on triple fault instead of triggering a Guru Meditation (see vboxmanage-modifyvm)

- 3D support: several fixes

- 3D support: several fixes for Mac OS X hosts

- OVF: several fixes

- Extpack Installer: make it work if the file is located in a folder with special characters

- Keyboard: fix for reporting key sequences like Ctrl+Alt+Del for the USB keyboard emulation

- Shared Clipboard/X11: support for BMP-format images, contributed by François Revol

- Mac OS X hosts: limited support for Mac OS X 10.9 (Mavericks)

- Mac OS X hosts: use a launchd script instead of the deprecated StartupItem mechanism (bug #8940)

- Windows hosts: don't cause massive DPC latency (only on certain hosts; still needs improving; bug #6242)

- Windows hosts: consider symlinks when retrieving volume information (bug #11962)

- Windows hosts: fixed an issue with USB2 devices being inaccessible when plugged into USB 3.0 ports

- Windows Additions: fixed misbehavior with guest display power management (WDDM driver only; bug #11170)

- Windows Additions: fixed memory leak caused by WTSQuerySessionInformation() on Windows 2000 guests (bug #12072)

- Windows Additions: ability to track guest user idle times through the newly introduced event IGuestUserStateChangedEvent

- Linux Additions: fixed udev detection in the init script with Linux 3.x kernels

## Version 4.2.22 (2014-01-10)

This is a maintenance release. The following items were fixed and/or added:

- GUI: Mac OS X host: introduced extradata option "GUI/HidLedsSync" aimed to enable HID LEDs synchronization (feature disabled by default)

- GUI: Mac OS X host: fixed issue on MacBook Air/Pro hosts when GUI might freeze in attempt to synchronize HID LEDs

- Main: always expose the DMI memory information to Windows 2012 guests (bug #12017)

- HGCM: fixed crashes under certain conditions

- Storage: fix for BLKCACHE_IOERR runtime errors under rare circumstances (bug #11030)

- AHCI: fixed a bug which resulted in Windows XP guest hangs if a SATA CDROM is attached (bug #12417)

- AHCI: fixed a Guru Meditation under certain conditions

- E1000: if the cable was disconnected before the guest initialized the device, the link status was not properly set to 'down' after the initialization completed despite the fact that there was no connection

- 3D support: fixed offset of guest 3D image elements (Mac OS X Retina hosts only; bug #11021)

- 3D support: many fixes

- Linux Additions: support Enterprise Linux 6.5 kernels (bug #12505)

- Linux Additions: fixed CPU hot-remove on newer Linux kernels

- Windows Additions: fixed guest crashes in in Shared Folders service under certain conditions

## Version 4.2.20 (2013-11-28)

This is a maintenance release. The following items were fixed and/or added:

- GUI: always report recommended resolutions for all monitors (not always done since 4.2.12)

- GUI: make sure the assigned license and description are attached to the exported appliance

- GUI: the OS X hot corners were not accessible while a VirtualBox VM is running (Mac OS X hosts only; bug #4139)

- NAT: don't run into an infinite loop in case the host cannot access any DNS server (4.3.0 regression; bug #12300)

- NAT: don't re-connect the cable if the DNS information changes and the cable was disconnected before (4.3.0 regression; bug #12225)

- Main: properly save the passthrough flag for DVD drives without an attached medium

- Keyboard: fixed a VM crash if a VM was resumed from a saved state where at least one key was pressed (bug #11289)

- 2D Video acceleration: fix crashes on presentation mode switches (bug #9194)

- Storage: fixed errors with snapshots when using QCOW or QED disk images (bug #12144)

- Storage: fix for newer Linux kernels not detecting a hard disk as SSD when using the IDE or SATA controller (bug #12025)

- Storage: fixed detection of CD/DVD media when switching from an empty to a host drive with passthrough enabled

- Snapshots: fixed a bug which could result in lost medium attachments (4.2.18 regression; bug #11750)

- Shared Clipboard: fixed potential SEGFAULT when working with UTF8 and UTF16 content (Mac OS X hosts only)

- OVF: fixed import logic for OVF appliances containing multiple VMs

- Extpack Installer: make it work if the file is located in a folder with special characters

- SDK: extended the functionality coverage for the C bindings

- API: block the removal of the current snapshot if it has child snapshots (only relevant for VMs without snapshottable hard disks, their presence always prevented removal), which resulted in VM config corruption

- API: mark VM configs with snapshots but without current snapshot as inaccessible, as this combination is nonsense

- API: fixed information for some automatically generated events (only with XPCOM, Windows host was not affected), which caused errors when getting some of the attributes over the webservice (bug #12379)

- Mac OS X hosts: support for Mac OS X 10.9 (Mavericks)

- Mac OS X hosts: properly sign the kernel extensions for Mavericks hosts (bug #12256)

- Mac OS X hosts: use a launchd script instead of the deprecated StartupItem mechanism (bug #8940)

- Mac OS X hosts: fixed a bug where the VirtualBox dock icon was not properly removed from the dock after a VM terminated preventing Mavericks hosts from shutting (bug #12241)

- Linux Additions: Linux 3.13 compile fix (bug #12358)

- Linux Additions: Linux 3.12 compile fix (bug #12083)

- Linux Additions: Linux 3.11 fix for shared folders (bugs #11946, #12128)

- Linux Additions: compile fix for SLES11 SP3

- Linux Additions: correctly set umask before installing (bug #12166)

- Linux Additions: build the vboxvideo kernel module correctly on OL/RHEL 6.1 guests (bug #11996)

- Linux Additions: make 3D work on Slackware 14.1 (bug #12320 comments 3 and 4)

- Windows Additions: fixed memory leak caused by WTSQuerySessionInformation() on Windows 2000 guests (bug #12072)

- Windows Additions: multimonitor resize fixes

- X11 Additions/3D: fix freezes starting 3D desktop (bug #11503, thank you Sam Spilsbury)

- Guest additions/3D: fix an occasional dead-lock (bug #12319)

## Version 4.2.18 (2013-09-06)

This is a maintenance release. The following items were fixed and/or added:

- VMM: properly handle NMIs on Linux hosts with X2APIC enabled

- VMM: fixed potential crashes with 64-bit guests on 32-bit hosts (bug #11979)

- GUI / seamless: properly handle mouse wheel scroll events

- GUI, VBoxManage: when unregistering a VM, also unregister the hard disk images which are used exclusively (bug #10311)

- GUI: prevent crashes under certain conditions on X11 hosts

- 3D support: multiscreen fixes (incorrect mouse position, flickets)

- 3D support: several fixes for the Windows WDDM video driver (multiscreen, seamless)

- Snapshots: made live snapshots work again (bug #9255)

- Teleportation: made it work again (bug #9455)

- VBoxManage: on snapshot take, --pause is default and --live is for doing live snapshots

- VBoxSVC: don't crash on systems with many VLAN interfaces (Solaris hosts only)

- Network: after the host resumes from suspend, disconnect and reconnect the virtual network cables to force renewing the DHCP leases for the guests. So far only Mac OS X hosts and Windows hosts (bug #10063)

- NAT: on name server changes force a reconnect of the virtual network cable to notify the guest (Mac OS X hosts only)

- Mac OS X installer: keep previously installed Extension Packs on VirtualBox upgrade

- Linux hosts / guests: Linux 3.11 fixes (bug #12001)

- Solaris hosts: fixed a potential kernel panic caused due to unexpected preemption due to logging

- Windows hosts: fixed an issue with USB2 devices being inaccessible when plugged into USB3 ports

- Linux Additions: added PCI device identifier to vboxvideo.ko fixing DRI initialization under certain conditions (bug #11957)

- Linux Additions: fixed udev detection in the init script with Linux 3.x kernels

## Version 4.2.16 (2013-07-04)

This is a maintenance release. The following items were fixed and/or added:

- OVF/OVA: don't crash on import if no manifest is used (4.2.14 regression; bug #11895)

- GUI: do not restore the current snapshot if we power-off after a Guru Mediation

- Storage: fixed a crash when hotplugging an empty DVD drive to the VM

- Storage: fixed a crash when a guest read from a DVD drive attached to the SATA controller under certain circumstances

- EFI: don't fail with 64-bit guests on 32-bit hosts (bug #11456)

- Autostart: fixed VM startup on OS X

- Windows hosts: native Windows 8 controls

- Windows hosts: restore native style on Vista 32

- Windows hosts / guests: Windows 8.1 adaptions (bug #11899)

- Mac OS X hosts: after removing VirtualBox with VirtualBox_Uninstall.tool, remove it from the pkgutil --pkgs list as well

## Version 4.2.14 (2013-06-21)

This is a maintenance release. The following items were fixed and/or added:

- VMM: another TLB invalidation fix for non-present pages

- VMM: fixed a performance regression (4.2.8 regression; bug #11674)

- GUI: fixed a crash on shutdown

- GUI: prevent stuck keys under certain conditions on Windows hosts (bugs #2613, #6171)

- VRDP: fixed a rare crash on the guest screen resize

- VRDP: allow to change VRDP parameters (including enabling/disabling the server) if the VM is paused

- USB: fixed passing through devices on Mac OS X host to a VM with 2 or more virtual CPUs (bug #7462)

- USB: fixed hang during isochronous transfer with certain devices (4.1 regression; Windows hosts only; bug #11839)

- USB: properly handle orphaned URBs (bug #11207)

- BIOS: fixed function for returning the PCI interrupt routing table (fixes NetWare 6.x guests)

- BIOS: don't use the ENTER / LEAVE instructions in the BIOS as these don't work in the real mode as set up by certain guests (e.g. Plan 9 and QNX 4)

- DMI: allow to configure DmiChassisType (bug #11832)

- Storage: fixed lost writes if iSCSI is used with snapshots and asynchronous I/O (bug #11479)

- Storage: fixed accessing certain VHDX images created by Windows 8 (bug #11502)

- Storage: fixed hang when creating a snapshot using Parallels disk images (bug #9617)

- 3D support: seamless + 3D fixes (bug #11723)

- 3D support: version 4.2.12 was not able to read saved states of older versions under certain conditions (bug #11718)

- Main/Properties: don't create a guest property for non-running VMs if the property does not exist and is about to be removed (bug #11765)

- Main/Properties: don't forget to make new guest properties persistent after the VM was terminated (bug #11719)

- Main/Display: don't lose seamless regions during screen resize

- Main/OVF: don't crash during import if the client forgot to call Appliance::interpret() (bug #10845)

- Main/OVF: don't create invalid appliances by stripping the file name if the VM name is very long (bug #11814)

- Main/OVF: don't fail if the appliance contains multiple file references (bug #10689)

- Main/Metrics: fixed Solaris file descriptor leak

- Settings: limit depth of snapshot tree to 250 levels, as more will lead to decreased performance and may trigger crashes

- VBoxManage: fixed setting the parent UUID on diff images using sethdparentuuid

- Linux hosts: work around for not crashing as a result of automatic NUMA balancing which was introduced in Linux 3.8 (bug #11610)

- Windows installer: force the installation of the public certificate in background (i.e. completely prevent user interaction) if the --silent command line option is specified

- Windows Additions: fixed problems with partial install in the unattended case

- Windows Additions: fixed display glitch with the Start button in seamless mode for some themes

- Windows Additions: Seamless mode and auto-resize fixes

- Windows Additions: fixed trying to to retrieve new auto-logon credentials if current ones were not processed yet

- Windows Additions installer: added the /with_wddm switch to select the experimental WDDM driver by default

- Linux Additions: fixed setting own timed out and aborted texts in information label of the lightdm greeter

- Linux Additions: fixed compilation against Linux 3.2.0 Ubuntu kernels (4.2.12 regression as a side effect of the Debian kernel build fix; bug #11709)

- X11 Additions: reduced the CPU load of VBoxClient in drag and drop mode

- OS/2 Additions: made the mouse wheel work (bug #6793)

- Guest Additions: fixed problems copying and pasting between two guests on an X11 host (bug #11792)

- Guest Additions: fixed guest process timeout / kill handling

## Version 4.2.12 (2013-04-12)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a Guru Meditation on putting Linux guest CPU online if nested paging is disabled

- VMM: invalidate TLB entries even for non-present pages

- GUI: Multi-screen support: fixed a crash on visual-mode change

- GUI: Multi-screen support: disabled guest-screens should now remain disabled on visual-mode change

- GUI: Multi-screen support: handle host/guest screen plugging/unplugging in different visual-modes

- GUI: Multi-screen support: seamless mode: fixed a bug when empty seamless screens were represented by full screen windows

- GUI: Multi-screen support: each machine window in multi-screen configuration should have correct menu-bar now (Mac OS X hosts)

- GUI: Multi-screen support: machine window View menu should have correct content in seamless / full screen mode now (Mac OS X hosts)

- GUI: VM manager: vertical scroll-bars should be now updated on content/window resize

- GUI: VM settings: fixed crash on machine state-change event

- GUI: don't show warnings about enabled or disabled mouse integration if the VM was restored from a saved state

- Virtio-net: properly announce that the guest has to handle partial TCP checksums (bug #9380)

- Storage: Fixed incorrect alignment of VDI images causing disk size changes when using snapshots (bug #11597)

- Audio: fixed broken ALSA & PulseAudio on some Linux hosts due to invalid symbol resolution (bug #11615)

- PS/2 keyboard: re-apply keyboard repeat delay and rate after a VM was restored from a saved state (bug #10933)

- BIOS: updated DMI processor information table (type 4): corrected L1 & L2 cache table handles

- Timekeeping: fix several issues which can lead to incorrect time, Solaris guests sporadically showed time going briefly back to Jan 1 1970

- Main/Metrics: disk metrics are collected properly when software RAID, symbolic links or rootfs are used on Linux hosts

- VBoxManage: don't stay paused after a snapshot was created and the VM was running before

- VBoxManage: introduced controlvm nicpromisc (bug #11423)

- VBoxManage: don't crash on controlvm guestmemoryballoon of the VM isn't running (bug #11639)

- VBoxHeadless: don't filter guest property events as this would affect all clients (bug #11644)

- Guest control: prevent double CR in the output generated by guest commands and do NLS conversion

- Linux hosts / guests: fixed build errors on Linux 3.5 and newer kernels if the CONFIG_UIDGID_STRICT_TYPE_CHECKS config option is enabled (bug #11664)

- Linux Additions: handle fall-back to VESA driver on RedHat-based guests if vboxvideo cannot be loaded

- Linux Additions: RHEL/OEL/CentOS 6.4 compile fix (bug #11586)

- Linux Additions: Debian Linux kernel 3.2.0-4 (3.2.39) compile fix (bug #11634)

- Linux Additions: added auto-logon support for Linux guests using LightDM as the display manager

- Windows Additions: Support for multimonitor. Dynamic enable/disable of secondary virtual monitors. Support for XPDM/WDDM based guests (bug #6118)

- X11 Additions: support X.Org Server 1.14 (bug #11609)

## Version 4.2.10 (2013-03-05)

This is a maintenance release. The following items were fixed and/or added:

- GUI: fixed keyboard with XQuartz X server (bug #10664)

- Main/Display: fixed a crash with multi-monitors under certain conditions (Mac OS X hosts only)

- Main/Properties: fixed a crash under certain conditions, for example after wakeup from host hibernate (bug #11444)

- Settings: don't lose the internal network settings if they are not currently active

- Storage: another incompatibility fix for VHD differencing images with Hyper-V (bug #5990)

- VBoxManage: don't read beyond the end of the file specified with export --eulafile (bug #11528)

- Linux hosts / guests: Linux 3.9-rc0 compile fixes

- Linux Additions: fixed two warnings in the shared folders guest kernel module (bug #11390)

- Linux Additions: don't crash VBoxService if libdbus is not available (bug #8638)

- Windows Additions: fixed upgrading MultiMedia Redirection (MMR) support

## Version 4.2.8 (2013-02-20)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a guest crash with a huge amount of guest RAM on VT-x hosts (bug #11306)

- GUI: fixed a layout bug in the Mac OS X clone VM dialog (bug #10982)

- GUI: not all the translation tags were taken into account during the language switch (bug #11342)

- GUI: the take guest screenshot dialog sometimes had no keyboard input available on Windows host

- Main/Machine: fix the generation of a spurious event for inaccessible VMs which triggered an endless event generation loop in cooperation with the GUI which became unresponsive (4.2.6 regression; bug #11323)

- Main/Display: fix for an access violation under certain conditions in multi-monitor configurations (bug #10539)

- Main/Metrics: network metrics are now collected for active (up) interfaces only, the state of an interface being evaluated when the associated metric is enabled via setupMetrics

- Snapshots: reduce the time for merging snapshots under certain conditions

- Storage: fixed data corruption after resizing a VDI image under certain circumstances (bug #11344)

- Storage: fixed non working online merging of snapshots (4.2.6 regression; bug #11359)

- Storage: fixed crash when connecting to certain QNAP iSCSI targets

- Storage: fixed incompatibility of VHD differencing images with Hyper-V (bug #5990)

- Bridged Networking: fixed TCP pseudo header checksum computation for IPv6 (bug #9380)

- 3D support: fix Battlefield 1942 game crashes (bug #11369)

- Settings: really sanitise the name of VM folders and settings file, the code was disabled before (bug #10549)

- Settings: allow to change VRDE settings for saved VMs

- VBoxManage: don't crash during screenshotpng if there is no display (bug #11363)

- Linux hosts: work around gcc bug 55940 which might lead to wrong kernel module code if gcc 4.7 is used to compile the 32-bit Linux host kernel (bug #11035)

- Linux hosts: fixed inconsistent lock state and deadlock warnings on module load and VM startup when CONFIG_PROVE_LOCKING is enabled (bug #11318)

- Linux hosts: made "]" key work again on Japanese keyboards

- Mac OS X hosts: don't crash the kernel during dtrace if the VBox kernel extensions are loaded (10.6 hosts only; bug #11273)

- Solaris / Mac OS X hosts: machine CPU load metrics now report 100% when all cores are fully utilized (used to be a single core)

- Solaris 11 host installer: wait for any services left over from a previous installation to be terminated to avoid confusing SMF.

- Guest Additions: don't block signals for processes executed via guest control

- Guest Additions: fixed a small memory leak in VBoxService (bug #10970)

- Windows Additions: fixed shared folder issue with large reads/writes on 64 bit Windows guests (bug #11115)

- Linux Additions: Linux 3.8 compile fixes (bug #11036)

- X11 Additions: fixed blocked SIGALRM in 3D desktop sessions (bug #10987)

- X11 Additions: fixed an unresolved reference in vboxvideo_drv for X.org 6.8 guests and before (e.g. RHEL4; 4.2.0 regression)

- X11 Additions: fixed screen automatic resizing for guests with X.org 1.3 or older (4.2.0 regression)

## Version 4.2.6 (2012-12-19)

This is a maintenance release. The following items were fixed and/or added:

- VMM: don't inject stale VT-x events to prevent crashes after VM reset (bug #11256)

- VMM: workaround for buggy BIOSes which enable MONITOR only for certain CPUs (bug #9460)

- GUI: fixed trimming of anti-aliased text in details-view element headers (4.2.0 regression)

- GUI: fixed create-settings-file-alias functionality on Mac hosts (4.2.0 regression)

- GUI: fixed take-guest-screenshot functionality on Windows hosts (bug #11095)

- GUI: several minor fixes, including palette fixes (bug #11191)

- GUI: fixed Windows 2012 OS type (bug #11206)

- GUI: allow to terminate the VM even if VBoxSVC crashed

- API: fixed cancelling of snapshots, previously this could lead to inconsistent VM configs (bug #6877)

- API: fixed identifying disk images by UUID (bug #11209)

- 3D support: several fixes

- VRDP: fixed occasional crash with external authentication (bug #11156)

- VGA: fix for double scan text modes

- USB: fixed invalid pending request count at the time of service of DEVICE POWER requests (Windows hosts only; bugs #10021, #11056)

- USB keyboard: Korean keyboard workaround (bug #11150)

- Storage: fixed hang with QCOW images and asynchronous I/O enabled

- Storage: fixed hang with newer VHD images (bug #11279)

- Storage: actually write the non-rotational flag to the VM settings (4.2.0 regression)

- Virtio-net: fixed the problem with network statistics counters in Session Information dialog (GUI)

- Metrics: introduced network rate and disk usage metrics

- Metrics: fixed a crash under certain conditions on Solaris hosts

- BIOS: fix for El Torito

- Shared Folders: if the host folder of a shared folder mapping does not exist, keep it active but mark it as invalid to prevent inconsistent saved states (bug #11147)

- VBoxManage: fixed converting disks from raw images

- VBoxManage: show snapshot description in the VM or snapshot information

- VBoxManage: make implicit opening of media consistent in all places dealing with media

- VBoxManage: the iSCSI initiator name was not stored in the settings file when doing storageattach (bug #11212)

- VBoxManage: metrics collect now properly handles `'CPU/MHz'` and `'Net/*/LinkSpeed'` metrics

- VBoxManage: changing the image UUID or parent UUID as part of storageattach works now in all safe cases

- VBoxManage: introduced storageattach --medium additions as a shortcut to mount the additions image (bug #11165)

- OVF: fixed importing OVF files cerated by recent VMware products (bug #10905)

- Linux hosts / Bridged Networking: fixed the problem with leaking connections in conntrack (bug #11178)

- Linux Additions: added support for ConsoleKit sessions in the vminfo service of VBoxService

- Linux Additions: don't crash during remount under certain conditions (bug #11291)

- Linux/Solaris Additions: fixed guest memory metrics collection

- Solaris hosts: added a dependency to ensure that the user directories are reachable when starting VBox services

- Windows host installer: integrated user-contributed translations, thanks to all contributors!

- Windows Additions: fixed auto-logon installation for Windows 8

- Windows Additions: don't fail if the shared folders host service is not available

- Windows Additions: fixed Guest Additions startup on Windows 2000 guests (bug #11253)

- Windows Additions: auto-resize fixes for Windows 8 guests

## Version 4.2.4 (2012-10-26)

This is a maintenance release. The following items were fixed and/or added:

- GUI: fixed validation warning on global settings / proxy page (4.2.2 regression; bug #11089)

- GUI: fixed crash with multiple guest screens on certain conditions (Mac OS X hosts only)

- VBoxBalloonCtrl: fixed command line argument handling of ballooning module

- VRDP: fixed occasional crash during a video playback in the guest (bug #11082)

- BIOS: fixed broken DMI information (4.2 regression)

- BIOS: workaround for booting from Windows 2000 floppy disks

- EFI: fixed video mode selection loss on VM reboot (bug #10983)

- Parallel: fixed parallel port printing failure/ paper queue empty error (Windows hosts only)

- NAT: fixed crash on alias-less DNS responses when host-resolver is used

- Storage: fixed hang under rare circumstances

## Version 4.2.2 (2012-10-18)

This is a maintenance release. The following items were fixed and/or added:

- VMM: adapted to changes in Mac OS X 10.8.2 (bug #10965)

- GUI: restored VM item tool-tip functionality (4.2 regression)

- GUI: added group item tool-tip functionality

- GUI: fixed handling of the .ova/.ovf file name association (4.2 regression)

- GUI: it was not possible to change any setting before the first VM was created (bug #10928)

- GUI: disable grouping action if all the selected items are full children list of the same group already

- GUI: added menu for runtime drag and drop option change

- GUI: cleanup shared-clipboard menu on visual-mode change

- GUI: make sure VM receives keyboard focus on entering full screen mode on Win host (bug #11051)

- GUI: disable proxy authentication for security reasons

- 3D support: DrawIndexedPrimitiveUP implementation fixes for the Windows WDDM video driver (bug #10929)

- Storage: fixed a release assertion in the AHCI emulation when requests where cancelled with asynchronous I/O disabled

- Storage: fixed a hang during VM reset under certain circumstances (bug #10898)

- NAT: fixed a crash under rare circumstances (Windows hosts only; bug #10128)

- NAT: automatically use the host resolver if the host name server is set to some unusual loopback value (bug #10864)

- E1000: fixed a VirtualBox crash during intensive network transfers (4.2 regression; bugs #10936, #10969, #10980)

- ICH9: fixed PCI bridge initialization

- USB mouse: ensure that the last mouse event doesn't get lost if no URBs are available

- BIOS: certain legacy guests (e.g. Windows 95) didn't find the boot device after a warm reboot

- BIOS: don't trash the palette in text modes when setting the border color

- EFI: fixed OS X guest autoboot (4.2 regression)

- VBoxManage: fixed output of showvminfo --machinereadable (bug #10973)

- VBoxManage: fixed parsing of storageattach --discard (bug #11023)

- VBoxManage: fixed wrong output of the HPET setting in showvminfo (bug #11065)

- VBoxManage: fixed closing the guest session after executing a guest process via guest control

- VBoxShell: adaptions to interface name changes

- Guest Additions device: fixed a Guest Additions hang when a machine was reset after a crash

- Linux hosts / guests: Linux 3.7-rc1 fixes

- Linux Additions: support X.Org Server 1.13

- Linux Additions: fixed a hang when the X server was restarted with old guest kernels

- Linux Additions: fixed a VBoxService crash during CPU hot remove (bug #10964)

- Windows Additions: fixed automatic screen resize issue for NT4 guests

- OS/2 Additions: fixed shutdown hang

- OS/2 Additions: fixed mouse driver panic

- Solaris hosts: fixed autostart service going into maintenance mode after all VMs started

- Solaris hosts: fixed linking the host driver with the dtrace module

## Version 4.2.0 (2012-09-13)

This is a major update. The following major new features were added:

- Improved Windows 8 support, in particular many 3D-related fixes

- GUI: VM groups (bug #288)

- GUI: expert mode for wizards

- GUI: allow to alter some settings during runtime

- Support for up to 36 network cards, in combination with an ICH9 chipset configuration (bug #8805)

- Resource control: added support for limiting network IO bandwidth; see network_bandwidth_limit (bug #3653)

- Added possibility to start VMs during system boot on Linux, OS X and Solaris; see autostart (bug #950)

- Added experimental support for drag and drop from the host to Linux guests. Support for more guests and for guest-to-host is planned. (bug #81)

- Added support for parallel port passthrough on Windows hosts

- Enhanced API for controlling the guest; please see the SDK reference and API documentation for more information

In addition, the following items were fixed and/or added:

- Mac OS X hosts: sign application and installer to avoid warnings on Mountain Lion

- VMM: fixed a potential host crash triggered by shutting down a VM when another VM was running (only affected 32-bit hosts and 64-bit OS X hosts, 4.1 regression; bug #9897)

- VMM: fixed a potential host crash under a high guest memory pressure (seen with Windows 8 guests)

- VMM: improved VM context switch performance for Intel CPUs using nested paging

- VMM: added support for FlushByASID features of AMD CPUs (Bulldozer and newer)

- VMM: fixed unreal mode handling on older CPUs with VT-x (gPXE, Solaris 7/8/9; bug #9941)

- VMM: fixed MP tables fixes for I/O APIC interrupt routing relevant for ancient SMP guests (e.g. old OS/2 releases)

- VMM: support recent VIA CPUs (bug #10005)

- VMM: fixed handling of task gates if VT-x/AMD-V is disabled

- VMM: page fusion fixes

- GUI: network operations manager

- GUI: allow taking screenshots of the current VM window content (bug #5561)

- GUI: allow automatically sorting of the VM list

- GUI: allow starting of headless VMs from the GUI

- GUI: allow reset, shutdown and poweroff from the Manager window

- GUI: allow to globally limit the maximum screen resolution for guests

- GUI: show the full medium part on hovering the list of recently used ISO images

- GUI: do not create additional folders when a new machine has a separator character in its name (bug #6541)

- GUI: don't crash on terminate if the settings dialog is still open (bug #9973)

- GUI: consider scaled DPI values when display fonts on Windows hosts (bug #9864)

- GUI: if a bridged network interface cannot be found, don't refuse to start the VM but allow the user to change the setting immediately

- Snapshots: fixed a crash when restoring an old snapshot when powering off a VM (bugs #9364, #9604, #10491)

- Clipboard: disable the clipboard by default for new VMs (see security_clipboard). It can be enabled at any time using the VM menu

- Settings: sanitise the name of VM folders and settings file (bug #10549)

- Settings: allow to store the iSCSI initiator secret encrypted

- NAT: improvements for the built-in TFTP server (bugs #7385, #10286)

- NAT: fixed memory leak when disabling the NAT engine (bug #10801)

- E1000: 802.1q VLAN support (bug #10429)

- Storage: implemented burning of audio CDs in passthrough mode

- Storage: fixed audio CD passthrough for certain media players

- Storage: implemented support for discarding unused image blocks through TRIM for SATA and IDE and UNMAP for SCSI when using VDI images

- Storage: added support for QED images

- Storage: added support for QCOW (full support for v1 and readonly support for v2 images)

- Storage: added readonly support for VHDX images

- USB: don't crash if a USB device is plugged or unplugged when saving or loading the VM state (SMP guests only)

- Solaris additions: added support for X.org Server 1.11 and 1.12

- Solaris additions: switched to using an in-kernel mouse driver

- Windows hosts: no need to recreate host-only adapters after a VirtualBox update

- Windows hosts: updated toolchain; make the source code compatible to VC 2010 and enable some security-related compiler options

- Windows Additions: fixed memory leak in VBoxTray (bug #10808)

## Version 4.1.18 (2012-06-06)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed VERR_REM_VIRTUAL_CPU_ERROR under rare conditions after the guest has been reset (bug #5164 and others)

- VMM: fixed host freezes with 64-bit guests on 32-bit Linux hosts (bug #10528)

- VRDP: added a workaround for rdesktop clients not properly updating the screen size when minimized

- AHCI: fixed a rare bug which can cause a guest memory corruption after the guest storage controller has been reset

- NAT: another attempt to fix crashes under rare conditions (Windows hosts only; bug #10513)

- Mac OS X hosts: addressed issues running Leopard / Snow Leopard (bug #10631)

- Linux hosts / Bridged Networking: fixed the problem with device driver unloading on kernels 3.2.18 and newer due to an invalid reference counter (bug #10624)

- Linux hosts / guests: Linux 3.5-rc1 fixes

- Linux Additions: the guest content was sometimes not properly updated (bug #9887)

- Solaris Additions: installer fix for X.org Server 1.11 and 1.12

## Version 4.1.16 (2012-05-22)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed a Guru Meditation VERR_ACCESS_DENIED with certain guests (bugs #7589, #8247)

- VMM: fixed a Guru Meditation VERR_PAGE_TABLE_NOT_PRESENT with Ubuntu 32-bit guests with nested paging enabled on AMD CPUs (bug #10183)

- VMM: preserve segment limits and attributes when switching to unreal mode required for some legacy guests to work properly (VT-x without unrestricted guest execution only; bug #9941)

- VMM: fixed a VM hang after a resume from pause / savestate with SMP guests in rare cases

- 3D support: several fixes for the Windows WDDM video driver crash

- NAT: fixed a crash on attempt to process ICMP datagram under some circumstances (bug #10527)

- Host-only Networking: lifted the maximal number of interfaces to 128 on Linux and Mac OS X hosts (there is no such limitation for Solaris and Windows hosts)

- EFI: fixed wrong SEC/PEI Core entry point calculation (bug #10531)

- VRDP: fixed a display update problem (bug #10503)

- Main: set the proper VM state if savestate failed for some reason (bug #6189)

- Main: more useful error message if a medium is inaccessible

- VBoxManage: fixed controlvm savestate if the VM is already paused

- Mac OS X hosts: addressed issues running on Mountain Lion Preview 3 (bug #10267)

- Linux hosts: Linux 3.4 compile fixes

- Linux hosts: fixed wrong help path in some rpm-based packages (bug #10418)

- Guest Additions: fixed handling of custom environment variables during `VBoxManage guestcontrol execute` (bug #10581)

- Windows Additions: fixed guest driver crash of VBoxSF in certain cases (4.1.10 regression; bug #10408)

- Windows Additions: don't load the WDDM driver if 3D support is not available for Windows 8 guests to keep the guest maintainable in that case (still better to miss some features than providing a blank screen)

- Solaris Additions: added support for X.org Server 1.11 and 1.12

## Version 4.1.14 (2012-04-13)

This is a maintenance release. The following items were fixed and/or added:

- Network: fixed the problem with packets larger than MTU-4 when PCnet or PRO/1000 was bridged to certain types of adapters on OS X hosts (bug #3783)

- NAT: fixed a segfault under rare circumstances

- 3D support: fixed Windows WDDM video driver crash for SMP guests (bugs #10200, #10331)

- Windows Additions, VRDP: fixed occasional corruption of vertical text

## Version 4.1.12 (2012-04-03)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed VERR_NOT_SUPPORTED and VERR_RAW_MODE_INVALID_SMP guru meditation due to an invalid reschedule to raw mode (bug #10370)

- VMM: fixed PDMCritSectLeave guru meditation under rare circumstances with SMP guests

- VMM: proper Math Fault handling with certain legacy guests (bug #9042)

- NAT: fixed a socket leak under certain conditions

- Storage: better sanity check against reading beyond end-of-file

- Audio: fixed a crash in the NUL audio backend (bug #10374; 4.1.10 regression)

- HGCM: fixed a crash during savestate under rare circumstances

- Metrics: fixed an occasional crash during VM shutdown if host RAM/VMM metrics are enabled

- VBoxSVC: several locking fixes

- VBoxManage: return the correct error code if controlvm savestate failed (bug #10134)

- Guest Additions: VBoxService should not crash on exit (bug #10326; 4.1.10 regression)

- Windows Additions: set the correct time stamp when a file is closed (bug #6473)

- Windows Additions: better help if the DirectX backups are not properly installed

- Linux Additions: Linux 3.4-rc1 compile fixes

## Version 4.1.10 (2012-03-13)

This is a maintenance release. The following items were fixed and/or added:

- GUI: if 3D support on the host is not available for some reason, do not only disable this VM setting but also uncheck the checkbox

- VMM: fixed a potential problem causing to schedule interrupts during SYSEXIT right after STI

- VMM: fixed a potential guest memory corruption issue with page fusion

- VMM: adjusted the module matching algorithm for page fusion a little, generally resulting in slightly more shared pages

- Main: host interfaces no longer have "defaults" for IP address and network mask attributes

- Main: don't depend on a password for certain guest control operations (bug #10030)

- 3D support: fixed Windows XP hosts support (4.1.8 regression; bugs #10071 and #10088

- 3D support: rendering fixes for Linux hosts with NVIDIA graphics

- 3D support: fixed saved state issues (4.1.8 regression; bug #10126)

- 3D support: WDDM driver: fixed powershell_ise crashes (bug #10167), make WPF-based apps work with Aero enabled, fixed additional possible WinSAT crashes

- VRDP: fixed remote clipboard compatibility issues with some clients

- Storage: fixed a possible data corruption when compacting VDI or VHD images with snapshots (32-bit hosts only)

- iSCSI: fixed crash when using incorrect credentials when authenticating with a LIO target (bug #10173)

- Serial: don't abort in host mode under rare error conditions (non-Windows hosts only)

- SDK: actually ship current C bindings

- SDK: fixed the Java glue code for JDK 1.7.0 (bug #9848)

- SDK: added Python example

- Metrics: make metrics collection more robust regarding blocked VMs

- Web service: added SSL/TLS support

- VBoxShell: fixed Guest Additions information lookup

- Solaris installer: fixed dependency checking while installing VirtualBox in a zone

- Linux hosts/guests: Linux 3.3-rc1 compile fixes

- Solaris hosts: fixed debug kernel panics while opening module CTF data (bug #9651)

- Mac OS X hosts: fixed Python support on Lion

- Linux Additions: make 3D passthrough work on OL/RHEL 6.2 (bug #10010)

- Linux Additions: fixed missing implementation when copying shared folder data through kernel high memory (bug #9878)

- Linux Additions: make sure all data is written when closing a memory mapped file on a shared folder

- Linux Additions: added support for X.Org Server 1.12

- Solaris Additions: fixed guest kernel driver to load properly on guest reboot (4.1.8 regression; bug #10113)

- Solaris Additions: fixed missing 64-bit OpenGL library VBoxOGL.so (bug #10151)

- Solaris Additions: fixed VBoxService import and start for Solaris 11 guests

- Windows Additions: some Windows 8 adaptions

- Windows Additions: several fixes for shared folders (bug #9753)

- Guest control: miscellaneous bugfixes

## Version 4.1.8 (2011-12-19)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed VERR_MAP_FAILED during savestate under certain circumstances (bug #7929)

- GUI: stop updating the VM status icons when the VM is paused (bug #8368)

- VBoxManage: fixed wrong return code after startvm (bug #9642)

- BIOS: fixed hang at launch of DOS applications generated by Clipper 5.3 (note that hardware virtualization may be required)

- USB: fixed OS/2 boot hang when using recent USB drivers

- NAT: increase maximum number of parallel connections making connections with port forwarding more robust (bug #8471)

- Metrics: fixed potential problem with invalid access in guest metrics collection upon VM destruction

- Main: don't crash if a medium is ejected twice (bug #9922)

- VBoxSVC: fixed crash under rare circumstances (e.g. client crash)

- VRDP: fixed screen freeze (bug #9620)

- OVF/OVA: fixed broken disk images on import under rare circumstances

- OVF/OVA: better error message when importing corrupted appliances

- VMDK/VHD: fixed a possible corruption with host cache disabled when using snapshots under rare circumstances (bug #9749)

- 3D support: fixed full screen mode issues for ATI graphics (bug #9775), Windows Media Player rendering for XPDM-based Direct3D support (bug #8341). Multiple fixes to XPDM and WDDM - based 3D support for Windows Guests and for 3D support in general

- Linux hosts: fixes for Fedoras Linux 2.6.41 (bug #9948)

- Linux hosts/guests: fixes for Linux 3.2 (bug #9743)

- Solaris Additions: various shared folder fixes (bugs #9856, #9862, #9917)

- Windows Additions: various fixes for Direct3D support (un)installation, added detection of missing or wrong Direct3D system files

## Version 4.1.6 (2011-11-04)

This is a maintenance release. The following items were fixed and/or added:

- VRDP: fixed screen corruption

- NAT: the interface stopped working after a lot of failed ICMP requests (bug #9371)

- E1000: fixed rare Windows 7 guest hangs, either at boot time or when reconfiguring the network card in unusual setups (bug #6223)

- ATA: fixed a possible crash during ATAPI passthrough with certain guests

- ATA: improved compatibility with ancient Linux kernels

- Main: fixed incorrect framebuffer information after leaving the full screen mode with X11 guests, this lead to a scrambled preview window in the GUI for example

- Mac OS X hosts: fixed the problem with duplicate packets when bridged to a wireless interface (bug #9648)

- Linux hosts: fix for 3D support on Fedora 15 (bug #9799)

- Linux hosts: don't call del_timer_sync from an interrupt context (Fedora bug report 746331)

- Windows Vista and 7 guests: more WDDM fixes

- Linux Additions: fixed kernel module compilation failure on Redhat Enterprise Linux 4 (bug #9709)

- Linux Additions: install the DRI driver correctly on Ubuntu 11.10 guests

- Solaris Additions: added read-only mmap support for shared folders

- Solaris Additions: added directory, file mode and mask options for shared folders

- Windows Additions: implemented faster detection of logged-in guest users and stale sessions

- X.Org Additions: fixed graphical corruption when switching to a virtual terminal (bug #9490)

## Version 4.1.4 (2011-10-03)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed PAE guests running on 32-bit hosts (4.0 regression; bug #9458)

- VMM: fixed INVALID_PARAMETER guru meditation caused by insufficient memory conditions (4.1.0 regression; bug #9240)

- VMM: fixed clobbered CPU registers during stos/lods/ins/outs emulation under rare circumstances

- VMM: another fix for 64-bit guests on recent AMD CPUs

- GUI: warn the user if he uses an outdated extension pack and allow to download and upgrade in that case (bug #8025)

- GUI: fixed spurious LCtrl key events on some Windows hosts (4.0.6 regression; bug #373)

- VBoxManage: another fix for extpack install --replace (bug #9308)

- VBoxManage: allow to specify the UUID of the target image in convertfromraw

- VRDP: fixed a rare crash when two or more clients connect to the server (bug #9503)

- VRDP: fixed a case when a client was not resized correctly (bug #9242)

- USB: make device capturing work on Windows hosts with usbhub class filter drivers installed (bug #9298); bugfixes for Windows host USB support

- VHD: fixed reads crossing block boundaries (bug #8532)

- VMDK: fixed progress indicator when creating split VMDK images

- Floppy: fixed medium size detection for physical mediums (Windows hosts only)

- Main: fixed VM initialization if a shared folder does not exist (bug #7941)

- Main: fixed possible deadlock between hard disk enumeration and resetting of immutable disks (bug #9549)

- Main: fixed not detaching of virtual storage after a snapshot restore operation (bug #8296)

- Main: always reset modified state after restoring a snapshot (bug #9387)

- Main: fixed writing of changed VM settings to disk when using snapshots (bug #8932)

- Main: fixed taking screen shots (e.g. the preview window) for headless VMs if the Guest Additions are active

- Virtio-net: fixed the problem with UDP packets exceeding MTU (bug #9370)

- 3D support: fixed incorrect rendering and possible crashes when switching to/from full screen with enabled 2D acceleration

- 3D support: fixed compiz under ubuntu 9.10

- Guest control: miscellaneous small bugfixes

- Linux / Solaris hosts: don't use hard links in packages (4.1.2 regression; bug #9441)

- Mac OS X hosts: fix installation issues when installed as root (bug #1578)

- Mac OS X hosts: fixed packet capture issues with vboxnetX host-only interfaces (bug #8076)

- Solaris hosts: fixed incoming multicast packets for Crossbow based bridged networking (bug #9532)

- Solaris hosts: fixed starting EFI guests due to missing EFI ROM files (bug #9535)

- Windows hosts installer: fixed ADDLOCAL usage on command line (4.1.0 regression; bug #9488)

- Windows hosts installer: fixed dangling shortcut to the .chm help file (bug #9646)

- Windows hosts installer: try to fix installation error 2869 which appeared under certain circumstances (bug #9664)

- Windows hosts: VBoxHeadless should never open a separate console window (bug #3549)

- Guest Additions: fixed hang while waiting for guest execution output (4.1.2 regression; bug #9446)

- Linux Additions: add support for X.Org Server 1.11 (bug #9519)

- Linux Additions: suppress an incorrect error message and allow a shared folder to be mounted in multiple places (bug #9627)

- Linux Additions: start VBoxService correctly on openSUSE 12.1 (bug #6229)

- Linux Additions: properly finish the installation even if the compilation of the DRM module fails (which is not fatal)

- Solaris Additions: fixed memory leaks and panics while mounting (from console) and unmounting shared folders

- Windows Additions: fixed swapped mouse cursor hotspot coordinates (4.1.0 regression; bug #9447)

- Windows Additions: fixed PAGE_FAULT_IN_NONPAGED_AREA BSOD in VBoxDisp.dll when running SnippingTool (bug #9508)

- Windows Additions: make image viewer work correctly with Aero enabled (Vista and Windows 7)

- Windows Additions: fixed incorrect window border blurs under Aero with ATI cards (Vista and Windows 7)

- Windows Additions: fixed incorrect rendering when moving 3D applications outside guest desktop and back under Aero (Vista and Windows 7)

- Windows Additions: fixed guest hangs when switching back from full screen text mode applications (bug #9636)

## Version 4.1.2 (2011-08-15)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed 64-bit guests on AMD Fusion CPUs (bug #8824)

- VMM: fixed handling of the sysenter/sysexit machine instructions in 64-bit guests on Intel hosts

- GUI: added linked clone support

- GUI: fixed error check when changing the VM controller settings (4.1.0 regression; bug #9246)

- GUI: fixed the inclusion of additional information (license, vendor, ...) on OVF export

- GUI: when taking a snapshot from the VM selector, don't do a live snapshot

- GUI: fixed immediate crash during start on certain environments due to a library version conflict

- Guest control execution: implemented copying single files from guest to the host (directories and filters not supported yet)

- Guest control execution: limited to serve up to 5 guest processes at a time by default

- Main: return the correct RDP default port fixing settings warnings in the GUI if the remote display was enabled at runtime (bug #9368)

- VBoxSVC: made the path comparison OS independent when images are registered (bug #9303)

- VBoxSVC: several fixes/performance improvements for cloning of VMs

- Snapshots: fixed "Solid-State drive" flag survival on snapshot creation (bug #9379)

- VBoxManage: implemented copyfrom and stat guest control tools to copy files from guest to host and to check for existence of files on the guest

- VBoxManage: fixed extpack install --replace (bug #9308)

- VBoxManage: allow to start multiple VMs with startvm

- VBoxManage: experimental support for SATA CD/DVD hotplugging

- Mouse support: fixed an off-by-one pointer position error affecting Windows guests (bugs #7566, #9321)

- VRDP: fixed a case when the screen was not redrawn correctly (bug #9242)

- NAT: changed TCP connection establishment according to Winsock API requirements (Windows hosts only; bug #8919)

- USB: fixed device recognition issues (bugs #9299) and fixed several device capturing issues (Windows hosts; bug #9299)

- USB: fixed issues with remote filters being applied to local USB devices

- Guest Additions: keep logged in user count in out-of-memory situations and warn about it

- OVA: fixed import of renamed OVA files (bug #9033)

- Windows host: fixed icon for .VDI files (bug #9393)

- Solaris hosts: fixed a bug preventing parallel usage of multiple host NICs with Crossbow based bridged networking

- Linux hosts: fixed random kernel panics on host suspend / shutdown (4.1.0 regression; bug #9305)

- Solaris Additions: fixed shared folders due to missing symbols in the vboxfs module (4.0.12 / 4.1.0 regression; bug #9264)

- Windows Additions: fixed file truncation on a shared folder with some applications (bugs #9276, #9315)

- Windows Additions: fixed shared folder issues with antivirus software and 64 bit Windows guests (bug #9318)

- Windows Vista and 7 guests: WDDM driver fixes and performance enhancements, fixed WinSAT crashes (bug #9267)

- Linux Additions: fixed llseek for Linux kernels 2.6.37 and above

## Version 4.1.0 (2011-07-19)

This version is a major update. The following major new features were added:

- Support for cloning of VMs (bug #5853, see clone): full clones can be created through the GUI and VBoxManage, linked clones only through VBoxManage

- GUI: enhanced wizard for creating new virtual disks

- GUI: new wizard for copying virtual disks

- GUI: keep the aspect ratio in scale mode (Windows and Mac OS X hosts only; bug #7822)

- VMM: raised the memory limit for 64-bit hosts to 1TB

- Experimental support for PCI passthrough for Linux hosts, see pcipassthrough

- Windows guests: Experimental WDDM graphics driver, supporting Windows Aero (bug #4607) and providing Direct3D support using a cleaner approach (no need to install the guest drivers in Safe Mode anymore)

- Guest Additions: status of modules and features can now be queried separately by the frontends

- Networking: new network attachment mode "Generic Driver", which offers an open plugin architecture for arbitrary and separately distributable virtual network implementations

- Host-only Networking: fixed host crash in kernels prior to 2.6.29

- New Networking Mode UDP Tunnel: allows to interconnect VMs running on different hosts easily and transparently, see networkingmodes

- Experimental support for SATA hard disk hotplugging available with VBoxManage

- Solaris hosts: New Crossbow based bridged networking driver for Solaris 11 build 159 and above

In addition, the following items were fixed and/or added:

- VMM: more SMP timer fixes

- VMM: fixed sporadic recompiler crashes with SMP guests

- VMM: many small fixes

- GUI: when restoring a snapshot, ask for taking a snapshot of the current state

- GUI: added a View menu

- GUI: added a setting for the promiscuous mode policy for internal networks, bridged networks and host-only networks

- GUI: added slider for setting the CPU execution cap allowing to limit the amount of CPU time spent for the execution of the guest, see settings-processor

- GUI: the VM description is editable during the runtime of a VM (bug #1551)

- GUI: added proxy settings (bug #2870)

- GUI: made the number of SATA ports configurable

- GUI: decrease time before showing the VM configuration dialog

- VBoxManage: more convenient configuration of storage controller attachments by automatically determining the port or device parameter when a storage controller has only one port or device per port

- VBoxManage: changed syntax of the guestcontrol command group, fixed various bugs, removed obsolete options

- VBoxBalloonCtrl: new service for automatic dynamic adjustment of the balloon size for running VMs

- Settings: machine names and snapshot names are not allowed to be a valid UUID

- Settings: provide better diagnostics if a single medium is used twice in a VM configuration

- Settings: provide better diagnostics for errors in medium create/merge/clone operations, and fix memory leaks in error cases

- Storage: ATA/SATA drives can be marked as non-rotational, i.e. the guest OS will detect them as a SSD if supported, which can improve performance

- Storage: virtual CD/DVD images will be detached if the guest ejects the medium, unless the drive is marked to handle ejects only on a temporary basis

- Storage: the medium UUID can be changed again when attaching a medium for the first time, which allows using images which are exact duplicates including the UUID

- Storage: fixed possible data corruption under certain circumstances with VHD and Parallels images (bug #9150)

- Storage: fixed unnecessary expansion when cloning differential images in VDI format

- Storage: fixed detection code to handle empty files for VDI and VMDK format

- Storage: fixed access to CD/DVD images beyond 4GB when using the SATA controller (bug #8592)

- Floppy: several bugs have been fixed

- Floppy: make it possible to unmount a host floppy disk (bug #6651)

- BIOS: disk-related structures are now checksummed correctly (bug #8739)

- USB: many fixes for the Windows USB host driver

- NAT: reduced memory footprint

- Networking: fixed the problem with segmentation offloading when several VMs are transmitting in parallel

- Networking: workaround for a bug in wireshark when operating directly on a capture file created by VirtualBox

- Serial: announce the serial devices in the ACPI tables to make Windows guests find the virtual hardware (bug #7411)

- VRDP: support for TLS connections (see vrde-crypt)

- VRDP: support for multimonitor client configurations with MS RDP clients

- VRDP: fixed a rare screen corruption

- 3D support: fixed GL_VERSION string for different locales (bug #8916)

- Web service: fixed timeout handling with HTTP 1.1 keepalive, and be more robust when connections fail

- VBoxSVC: fixed regression when several clients trigger autostart simultaneously

- Main: fixed incorrect handling of the medium location for media which are not file based (e.g. iSCSI), which resulted in confusing location values in many places

- JAX-WS client bindings: fixed resource leak

- Sources: fixed USB 2.0 support using extension packs for non-official builds

- Mac OS X hosts: fixed non-VT-x mode on Lion hosts

- Windows hosts: fixed copy'n'paste in the GUI and for the VM window (bug #4491)

- Windows hosts (64-bit only): enabled removing of all mediums when removing a VM

- Windows hosts (64-bit only): enabled live snapshot deletion

- Windows hosts: use native controls in the installer (bug #5520)

- Solaris hosts: fixed preemption issue with Solaris 11 hosts (builds 166 and above)

- Solaris hosts: better control of USB device access on Solaris 11 hosts

- Guest Additions: improved driver installation on Windows guests

- Guest Additions: fixed high CPU usage while executing guest programs from the host

- Solaris Additions: fixed automounting of shared folders (bug #8014)

## Version 4.0.14 (2011-10-13)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed 64bit guests on AMD Fusion CPUs (bug #8824)

- VMM: fixed handling of the sysenter/sysexit machine instructions in 64-bit guests on Intel hosts

- GUI: fixed the inclusion of additional information (license, vendor, ...) on OVF export

- GUI: when taking a snapshot from the VM selector, don't do a live snapshot

- GUI: fixed spurious LCtrl key events on some Windows hosts (4.0.6 regression; bug #5908)

- VBoxManage: fixed extpack install --replace

- VRDP: fixed a rare screen corruption

- E1000: fixed rare Windows 7 guest hangs, either at boot time or when reconfiguring the network card in unusual setups (bug #6223)

- Mouse support: fixed an off-by-one pointer position error affecting Windows guests (bugs #7566, #9321)

- NAT: changed TCP connection establishment according to Winsock API requirements (Windows hosts only; bug #8919)

- VHD: fixed reads crossing block boundaries (bug #8532)

- VMDK: fixed progress indicator when creating split VMDK images

- Floppy: fixed medium size detection for physical mediums (Windows hosts only)

- VBoxSVC: made the path comparison OS independent when images are registered (bug #9303)

- Main: return the correct RDP default port fixing settings warnings in the GUI if the remote display was enabled at runtime (bug #9368)

- Main: fix VM initialization if a shared folder does not exist (bug #7941)

- Main: fixed taking screen shots (e.g. the preview window) for headless VMs if the Guest Additions are active

- Main: fixed possible deadlock between hard disk enumeration and the resetting of immutable disks (bug #9549)

- OVA: fixed import of renamed OVA files (bug #9033)

- Virtio-net: fixed the problem with UDP packets exceeding MTU (bug #9370)

- Solaris hosts: fixed starting EFI guests due to missing EFI ROM files (bug #9535)

- Mac OS X hosts: fix installation issues when installed as root (bug #1578)

- Windows Additions: fixed file truncation on a shared folder with some applications (bugs #9276, #9315)

- Linux Additions: suppress an incorrect error message and allow a shared folder to be mounted in multiple places (bug #9627)

- Linux Additions: add support for X.Org Server 1.11 (bug #9519)

- Linux Additions: fixed llseek for Linux kernels 2.6.37 and above

- Linux Additions: start VBoxService correctly on openSUSE 12.1 (bug #6229)

- Linux Additions: properly finish the installation even if the compilation of the DRM module fails (which is not fatal)

## Version 4.0.12 (2011-07-15)

This is a maintenance release. The following items were fixed and/or added:

- Mac OS X hosts: Lion fixes

- Solaris hosts: fixed preemption issue with Solaris 11 hosts (builds 166 and above)

- VBoxManage: more convenient configuration of storage controller attachments by automatically determining the port or device parameter when a storage controller has only one port or device per port (bug #9188)

- Storage: fixed possible data corruption under certain circumstances with VHD and Parallels images (bug #9150)

- Storage: fixed access to CD/DVD images beyond 4GB when using the SATA controller (bug #8592)

- Floppy: make it possible to unmount a host floppy disk (bug #6651)

- Networking: fixed the problem with segmentation offloading when several VMs were transmitting at once

- 3D support: fixed GL_VERSION string for different locales (bug #8916)

- Sources: fixed USB 2.0 support using extension packs for non-official builds

- Solaris Additions: fixed automounting of shared folders (bug #8014)

## Version 4.0.10 (2011-06-22)

This is a maintenance release. The following items were fixed and/or added:

- GUI: fixed disappearing settings widgets on KDE hosts (bug #6809)

- Storage: fixed hang under rare circumstances with flat VMDK images

- Storage: a saved VM could not be restored under certain circumstances after the host kernel was updated (bug #8983)

- Storage: refuse to create a medium with an invalid variant (for example Split2G with VDI; bug #7227)

- iSCSI: pause the VM if a request times out

- Snapshots: none of the hard disk attachments must be attached to another VM in normal mode when creating a snapshot

- USB: fixed occasional VM hangs with SMP guests (bug #4580)

- USB: proper device detection on RHEL/OEL/CentOS 5 guests (partial fix for bug #8978)

- ACPI: force the ACPI timer to return monotonic values for improve behavior with SMP Linux guests (bug #8511 and others)

- VRDP: fixed screen corruption under rare circumstances (bug #8977)

- rdesktop-vrdp: updated to version 1.7.0

- OVF: under rare circumstances some data at the end of a VMDK file was not written during export

- Mac OS X hosts: Lion fixes

- Mac OS X hosts: GNOME 3 fix

- Linux hosts: fixed VT-x detection on Linux 3.0 hosts (bug #9071)

- Linux hosts: fixed Python 2.7 bindings in the universal Linux binaries

- Windows hosts: fixed leak of thread and process handles

- Windows Additions: fixed bug when determining the extended version of the Guest Additions (4.0.8 regression; bug #8948)

- Solaris Additions: fixed installation to 64-bit Solaris 10u9 guests (4.0.8 regression)

- Linux Additions: RHEL6.1/OL6.1 compile fix

- Linux Additions: fixed a memory leak during `VBoxManage guestcontrol execute` (bug #9068)

## Version 4.0.8 (2011-05-16)

This is a maintenance release. The following items were fixed and/or added:

- Mac OS X hosts: fixed incompatibility with recent Mac OS X versions in 64-bit mode (bug #8474)

- Mac OS X hosts: fixed incompatibility with hosts with more than 16 cores (bug #8389)

- Mac OS X hosts: fixed painting corruptions on a second monitor in 64-bit mode (bug #7606)

- GUI: restored functionality to set an empty host key to disallow any host key combination (4.0.6 regression; bug #8793)

- GUI: more expressive error messages for USB proxy permission problems (mainly Linux hosts; bug #8823)

- VBoxManage: added `controlvm screenshotpng` subcommand for saving the screenshot of a running VM in PNG format

- VBoxHeadless: fixed potential crash during shutdown (Windows hosts only)

- NAT: built-in services use the correct Ethernet addresses in Ethernet header and in ARP requests

- Host-only networking: fixed adapter reference counting

- E1000: fixed rare guest crashes with Linux SMP guests (bug #8755)

- SATA: fixed guest disk corruption under rare circumstances (only relevant for guests with more than 2GB RAM; bug #8826)

- Storage: fixed data corruption after a snapshot was taken with asynchronous I/O enabled (bug #8498)

- Floppy: several improvement

- HPET: another fix for time jumps (bug #8707)

- USB: use correct permissions when creating /dev/vboxusb (Linux hosts only)

- USB: removed assumption that string descriptors are null-terminated (Windows hosts only)

- 3D support: fixed a potential crash when resizing the guest window

- 3D support: fixed GNOME 3 rendering under Ubuntu 11.04 and Fedora 15

- Snapshots: fixed another bug which could lose entries in the media registry when restoring a snapshot (bug #8363)

- Shared Folders: don't stop mounting the other valid folders if one host folder is inaccessible (4.0.6 regression)

- Linux Additions: check whether gcc and make are installed before building kernel modules (bug #8795)

- Solaris Additions: added support for X.Org Server 1.10

- Guest Additions: fixed inappropriate Guest Additions update notification when using vendor-specific version suffixes (bug #8844)

## Version 4.0.6 (2011-04-21)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed incorrect handling of ballooned pages when restoring a VMM from a saved state

- VMM: don't crash on hosts with more than 64 cores / hyperthreads; implemented support for up to 256 host cores (except Windows hosts; bug #8489)

- VMM: fixed guru meditation for PAE guests running on hosts without PAE (bug #8006)

- VMM: fixed slow Linux guests with raw mode and recent guest kernels (bug #8726)

- GUI: support host key combinations (bug #979)

- GUI: fixed progress indicator (bug #7814)

- GUI: show the mouse pointer while the VM is paused if the USB tablet mouse emulation is used (bug #6799)

- GUI: adapt the snapshot folder as well when renaming a VM (bug #8469)

- GUI: persistently remember the last folders of the disk/DVD/floppy selectors

- GUI: never allow to start a VM with USB-2.0 activated if the proper extension pack is missing (bug #8182)

- GUI: fixed hang/crash when opening a file dialog in an non-existing folder (bug #8673)

- Snapshots: fixed a bug which could lose entries in the media registry when restoring a snapshot (bug #8363)

- Snapshots: allow snapshots to be stored in the VM directory

- 3D support: fixed a crash if a VM was forced to terminate (Windows hosts only; bug #7133)

- Storage: fixed memory leak (4.0 regression; bug #7966)

- Storage: fixed access to iSCSI targets over internal network

- Storage: fixed reading from disks with more than one snapshot for VHD and VMDK images with disabled host cache (bug #8408)

- Storage: fixed a possible hang during VM suspend after an I/O error occurred

- Storage: fixed a possible hang during VM suspend / reset (bug #8276, #8294)

- Storage: automatically create a diff image when attaching a streamOptimized VMDK image to a VM

- ATA/SATA: fixed automounting of virtual CD/DVD mediums with recent Linux distributions by correctly reporting the current profile as 'none' if no medium is present

- Buslogic: fixed emulation for certain guests (e.g. jRockit VE)

- Host-Only Networking: fixed interface creation failure on Windows hosts (4.0.4 regression; bug #8362)

- Host-Only & Bridged & Internal Networking: fix for processing promiscuous mode requests by VMs, defaulting to switch behaviour

- Host-Only Networking: fixed connectivity issue after resuming the host from sleep (bug #3625)

- Bridged Networking: support for interface bonding on Mac OS X hosts (bug #8731)

- NAT: fixed processing of ARP announcements for guests with static assigned IPs (bug #8609)

- VRDP: backward compatibility with VRDPAuth external authentication library (bug #8063)

- Shared Folders: don't fail to start a VM if a path is not absolute, for example when importing an OVF from a different host (bug #7941)

- Audio: fixed crash under certain conditions (bug #8527)

- USB: fixed a crash when plugging certain USB devices (bug #8699)

- HPET: fixed time jumps when reading the counter (bug #8707)

- OVF/OVA: automatically adjust disk paths if the VM name is changed on import

- OVF/OVA: fix export to slow medias

- OVF/OVA: automatically repair inconsistent appliances with multiple disks (bug #8253)

- rdesktop-vrdp: fixed an assertion triggered under certain conditions (bug #8593)

- Windows hosts: fixed occasional hangs during VM shutdown because sometimes COM was not properly uninitialized

- Mac OS X hosts: prevent the mouse from leaving the VM window while captured

- Mac OS X hosts: keep aspect ratio while resizing in scale mode (shift for old behaviour) (part of bug #7822)

- X11 hosts: fixed Yen key support (bug #8438)

- X11 hosts: fixed a regression which caused Host+F1 to pop up help instead of sending Ctrl+Alt+F1

- Linux hosts / Linux Additions: mangle IPRT symbols to allow installing VirtualBox inside a VM while the Guest Additions are active (bug #5686)

- Linux hosts / Linux guests: workaround for a bug in GLIBC older than version 1.11 leading to crashes under certain conditions (signed/unsigned problem with memchr on 64-bit machines)

- Solaris hosts: fixed a deadlock in event semaphores that could lead to unkillable VM processes

- Windows Additions: fixed Sysprep parameter handling

- Windows Additions: fixed spontaneous guest reboots under certain circumstances (4.0.2 regression; bugs #8406, #8429)

- Windows Additions: added auto logon support for locked workstations on legacy Windows versions

- Windows Additions: fixed driver bugcheck error when handling PnP messages (4.0 regression; bug #8367)

- Windows Additions: fixed memory leak in VBoxVideo

- X11 Additions: added support for X.Org Server 1.10 final

- Linux Additions: Linux kernel 2.6.39-rc1 fixes

- Linux Additions: improved auto-run support (bug #5509)

- Linux Additions: fix mouse support on SUSE 11 SP 1 guests (bug #7946)

- Solaris Additions: added support for X.Org Server 1.9

- Guest Additions: various bugfixes for guest control execution

- Web service: use own log file, with log rotation to limit size

## Version 4.0.4 (2011-02-17)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed recompiler crashes under certain conditions (bugs #8255, #8319 and further)

- VMM: fixed running 64-bit guests on 32-bit host with nested paging enabled on AMD CPUs (4.0 regression; bug #7938)

- VMM: fixed timing issues / hangs for certain guests using the programmable interval timer (bugs #8033 and #8062)

- VMM: large page and monitoring fixes for live snapshots (bugs #7910, #8059, #8125)

- GUI: fixed error message when trying to exceed the maximum number of host network interfaces

- GUI: fixed saving of changes to the metadata of an existing snapshot (bug #8145)

- GUI: fixed rare crash on X11 hosts (bug #8131)

- GUI: when selecting a shared folder, start the file dialog in the users home directory (bug #8017)

- ExtPack: enforce the correct permissions which might be restricted by umask when creating directories (non-Windows hosts only; bug #7878)

- VBoxSDL: fixed crash when starting by specifying the VM UUID (4.0 regression; bug #8342)

- VBoxManage: allow savestate even if the VM is already paused

- VBoxManage: fixed modifyvm --synthcpu (bug #6577)

- VBoxManage: fixed hang when doing guestcontrol execute --wait-for exit and displaying process status on exit (bug #8235)

- VBoxManage: decreased CPU load during guestcontrol execute --wait-for exit/stdout while waiting for the guest process to terminate (bug #7872)

- VBoxManage: fixed list hostdvds/hostfloppies

- VBoxManage: fixed storageattach for host DVD drives and host floppy drives

- Metrics: introduced RAM/VMM base metric

- Main: improved sanity check when taking a VM screen shot (bug #7966)

- Main: fixed a crash under rare circumstances if a VM failed to start

- Main: fixed attaching of immutable disk images (bug #8105)

- Main: fixed a crash at VM shutdown (bug #6443)

- Main: fixed incorrect handling of cross-referenced medium attachments (bug #8129)

- Settings: fixed truncating of big integer values (4.0 regression)

- Settings: properly store the ICH9 chipset type (bug #8123)

- Host-Only & Bridged Networking: fixed VBox DHCP server startup issue for Windows hosts (4.0 regression; bug #7905)

- Host-Only Networking: re-create vboxnetX interfaces after vboxnetadp.ko module reload on Linux and Darwin (bugs #5934, #6341)

- NAT: fixed an mbuf leak under rare circumstances (bug #7459)

- ACPI: don't allow the guest to enter S4 by default and don't announce S1 and S4 in the ACPI tables if disabled (bug #8008)

- Graphics card: made re-enabling disabled screens work correctly to prevent problems when X11 guests enter screen saving mode (bug #8122)

- Storage: fixed write errors with snapshots if the host cache is disabled (4.0 regression; bug #8221)

- ATA/SATA: fixed reset handling after ACPI suspend/resume

- BusLogic: fixed hang with SMP VMs

- Serial: another attempt to prevent lost characters during transmission (bug #1548)

- Linux hosts/guests: Linux 2.6.38-rc1 compile fixes

- Mac OS X hosts: fixed VBoxSVC crash when listing host interfaces without default gateway (64-bit hosts only; bug #7955)

- Solaris/Darwin hosts: fixed VM CPU execution cap

- X.Org guests: fixed a crash on X server restart (bug #8231)

- X.Org guests: support X.Org Server 1.10 pre-release and Ubuntu 11.04 Alpha

- X.Org guests: Add EDID emulation in the graphics driver to prevent GNOME settings daemon changing the mode on login

- X.Org guests: never send graphics modes to the host that older VirtualBox versions can't handle

- Linux Additions: fixed a memory leak in the shared folders code if a host link is not readable (bug #8185)

- Windows Additions: fixed handling of Security Attention Sequence (SAS) with VBoxGINA

## Version 4.0.2 (2011-01-18)

This is a maintenance release. The following items were fixed and/or added:

- GUI: don't crash if a removable host drive referenced from the VM settings vanished

- GUI: fixed a crash when using the KDE4 Oxygen theme and clicked on the settings button (4.0 regression; bug #7875)

- GUI: properly warn if the machine folder cannot be created (bug #8031)

- GUI: several fixes for multimonitor X11 guests

- ExtPack: don't make the installer helper application suid root (Linux .deb/.rpm packages only)

- ExtPack: improved user experience on Vista / Windows 7 when installing an extension pack

- ExtPack: fixed issue with non-ascii characters in the path name during installing an extension pack (bug #9717)

- ExtPack: fixed SELinux issues on 32-bit Linux hosts

- VBoxManage: Host-only interface creation and removal is now supported for all platforms except Solaris (bug #7741)

- VBoxManage: fixed segmentation fault when removing non-existent host-only interface

- Storage: fixed possible crashes with VMDK/VHD images with snapshots and asynchronous I/O (4.0 regression)

- Storage: don't eject the physical medium if a DVD/CDROM/floppy drive is detached from a VM (bug #5825)

- Storage: be more robust when a faulty guest sends ATA commands to an ATAPI device (bug #6597)

- Parallels: fixed deletion of the image during suspend, pause or power off (4.0 regression)

- Bridged networking: fixed host kernel panic when bridging to devices with no TX queue (4.0 regression; Linux hosts only; bug #7908)

- NAT: port-forwarding rule registration respects protocol parameter (bug #8094)

- E1000: fixed PXE boot issues with WDS (bug #6330)

- Virtio-net: fixed the issue with TX performance in some Linux guests

- ICH9: fixed VM crash (software virtualization only; bug #7885)

- VGA: fixed VESA screen issue (4.0 regression; bug #7986)

- Shared Folders: fixed parameter parsing when creating symbolic links, fixes 32-bit/64-bit bitness issue (bug #818)

- Main: fixed crash under rare circumstances due to an invalid logging string (4.0 regression)

- Main: improve error information propagation for errors preventing a VM start

- Main: fixed problems with snapshots and non-ASCII characters in machine paths (bug #8024)

- Web service: now listens to localhost by default as documented (bug #6067)

- Settings: do not fail loading machine settings if removeable drive attachment (host drive or image) cannot be found; with 4.0 this is much more likely when machines are moved from one host to another

- Settings: fixed issue that changing a snapshot name or description was not saved to machine XML

- OVF/OVA: fixed import of files created by other OVF tools (bug #7983)

- rdesktop-vrdp: fix a crash during USB device enumeration (bug #7981)

- Linux hosts: fixed a crash during USB device enumeration

- Linux hosts: try a bit harder to allocate memory (bug #8035; 4.0 regression)

- Guest Additions: fixed parsing of parameters for guest control in VBoxService (4.0 regression; bug #8010)

- Windows Guest Additions: automatic logon on Windows Vista/Windows 7 now supports unlocking previously locked workstations

## Version 4.0.0 (2010-12-22)

This version is a major update. The following major new features were added:

- Reorganization of VirtualBox into a base package and Extension Packs; see intro-installing

- New settings/disk file layout for VM portability; see vboxconfigdata

- Major rework of the GUI (now called "VirtualBox Manager"):

  - Redesigned user interface with guest window preview (also for screenshots)

  - New "scale" display mode with scaled guest display; see intro-resize-window

  - Support for creating and starting `.vbox` desktop shortcuts (bug #1889)

  - The VM list is now sortable

  - Machines can now be deleted easily without a trace including snapshots and saved states, and optionally including attached disk images (bug #5511; also, `VBoxManage unregistervm --delete` can do the same now)

  - Built-in creation of desktop file shortcuts to start VMs on double click (bug #2322)

- VMM: support more than 1.5/2 GB guest RAM on 32-bit hosts

- New virtual hardware:

  - Intel ICH9 chipset with three PCI buses, PCI Express and Message Signaled Interrupts (MSI); see settings-motherboard

  - Intel HD Audio, for better support of modern guest operating systems (e.g. 64-bit Windows; bug #2785)

- Improvements to OVF support (see ovf):

  - Open Virtualization Format Archive (OVA) support

  - Significant performance improvements during export and import

  - Creation of the manifest file on export is optional now

  - Imported disks can have formats other than VMDK

- Resource control: added support for limiting a VM's CPU time and IO bandwidth; see storage-bandwidth-limit

- Storage: support asynchronous I/O for iSCSI, VMDK, VHD and Parallels images

- Storage: support for resizing VDI and VHD images; see vboxmanage-modifyvdi

- Guest Additions: support for multiple virtual screens in Linux and Solaris guests using X.Org server 1.3 and later

- Language bindings: uniform Java bindings for both local (COM/XPCOM) and remote (SOAP) invocation APIs

In addition, the following items were fixed and/or added:

- VMM: Enable large page support by default on 64-bit hosts (applies to nested paging only)

- VMM: fixed guru meditation when running Minix (VT-x only; bug #6557)

- VMM: fixed crash under certain circumstances (Linux hosts only, non VT-x/AMD-V mode only; bugs #4529 and #7819)

- GUI: add configuration dialog for port forwarding in NAT mode (bug #1657)

- GUI: show the guest window content on save and restore

- GUI: certain GUI warnings don't stop the VM output anymore

- GUI: fixed black full screen minitoolbar on KDE4 hosts (Linux hosts only; bug #5449)

- BIOS: implemented multi-sector reading to speed up booting of certain guests (e.g. Solaris)

- Bridged networking: improved throughput by filtering out outgoing packets intended for the host before they reach the physical network (Linux hosts only; bug #7792)

- 3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)

- 3D support: fixed various clipping/visibility issues (bugs #5659, #5794, #5848, #6018, #6187, #6570)

- 3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug #7395)

- 3D support: fixed OpenGL support for libMesa 7.9

- 3D support: fixed Unity/Compiz crashes on natty

- 2D Video acceleration: multimonitor support

- VRDP: fixed rare crash in multimonitor configuration

- VRDP: support for upstream audio

- Display: fixed occasional guest resize crash

- NAT: port forwarding rules can be applied at runtime

- SATA: allow to attach CD/DVD-ROM drives including passthrough (bug #7058)

- Floppy: support readonly image files, taking this as the criteria for making the medium readonly (bug #5651)

- Audio: fixed memory corruption during playback under rare circumstances

- Audio: the DirectSound backend now allows VMs to be audible when another DirectSound application is active, including another VM (bug #5578)

- EFI: support for SATA disks and CDROMs

- BIOS: reduce the stack usage of the VESA BIOS function #4F01 (Quake fix)

- OVF/OVA: fixed export of VMs with iSCSI disks

- Storage: Apple DMG image support for the virtual CD/DVD (bug #6760)

- Linux host USB support: introduced a less invasive way of accessing raw USB devices (bugs #1093, #5345, #7759)

- Linux hosts: support recent Linux kernels with CONFIG_DEBUG_SET_MODULE_RONX set

- Guest Additions: Shared Folders now can be marked as being auto-mounted on Windows, Linux and Solaris guests

- Linux Additions: Shared Folders now support symbolic links (bug #818)

- Linux Additions: combined 32-bit and 64-bit additions into one file

- Windows Additions: automatic logon on Windows Vista/Windows 7 is now able to handle renamed user accounts; added various bugfixes

## Version 3.2.12 (2010-11-30)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed rare host crash when running 64-bit guests on 32-bit hosts (bug #7577)

- VMM: fixed host reboots under rare circumstances due to NMIs triggered by active performance counters (Linux hosts in non-VT-x/AMD-V mode only; bug #4529)

- VMM: fixed out of memory guru meditation for large memory guests (bug #7586)

- VMM: fixed a guru meditation related to large pages

- VMM: use new VT-x feature to keep the guest from hogging the CPU

- Snapshots: implemented deleting the last remaining snapshot while the VM is running

- GUI: perform the checks for exceeding the size limit of the host file system and for broken asynchronous I/O on older Linux kernels with ext4 / xfs file systems not only when starting the VM from scratch but also when starting from a saved state

- NAT: fixed memory leak (3.2.0 regression; bugs #6918, #7353)

- NAT: fixed Linux NFS root issue (bugs #7299)

- Networking: fixed VM reset handling in e1000

- VRDP: fixed rare crash in multimonitor configuration

- Display: fixed occasional guest resize crash

- Mouse: don't send relative mouse events together with absolute mouse events (3.2.10 regression; bug #7571)

- Keyboard: fixes for the USB keyboard emulation; fixes for Korean keyboards

- Serial: don't hang if the host device would block during open (bugs #5756, #5380)

- Serial: fixed modem status lines (Linux hosts only; bug #812)

- Graphics: Horizontal resolutions are no longer restricted to a multiple of 8 pixels (bug #2047; requires Guest Additions update).

- USB: fixed a crash with older Linux kernels and non-ASCII characters in device strings (Linux hosts only; bug #6983, #7158, #7733; version 3.2.8 contained an incomplete fix)

- USB: fixed a crash under rare circumstances (bug #7409; Windows hosts only)

- "iSCSI: respond to NOP-In requests from the target immediately to avoid being disconnected if the guest is idle

- 3D support: fixed a crash under certain circumstances (bug #7659)

- 3D support: fixed crashes for GLUT based apps (bug #6848)

- 3D support: added missing GLX 1.3 functionality (bugs #7652, #7195)

- 2D Video acceleration: fixed potential deadlock when saving the VM state (bug #4124)

- Windows hosts: another fix for BSODs under certain circumstances in VBoxNetFlt.sys (bug #7601)

- Solaris hosts: fixed host USB DVD drive detection

- Mac OS X hosts: fixed swapped keys for certain ISO keyboard types (bug #2996)

- Linux hosts: added link state handling for TAP devices needed for proper operation with bridged networking on kernels 2.6.36 and above (bug #7649)

- Linux hosts/guests: Linux 2.6.37 fixes

- Linux Additions: properly compile the vboxvideo module if DKMS is not installed (bug #7572)

- Linux Additions: fixed a memory leak when accessing non-existing files on a Shared Folders (bug #7705)

- Windows Additions: skip none-mapped user accounts when enumerating user accounts for VM information

## Version 3.2.10 (2010-10-08)

This is a maintenance release. The following items were fixed and/or added:

- VMM: V8086 mode fix for legacy DOS/Windows guests with EMM386 (3.2.8 regression)

- VMM: stability fix (bug #7342)

- VMM: fixed a Guru meditation related to large pages (bug #7300)

- VMM: fixed support for large pages on Linux hosts

- VMM: fixed a Guru meditation for large memory 64-bit guests on 32-bit hosts with nested paging (bug #7544)

- VMM: performance improvements for VMs with more than 2GB RAM (bug #6928)

- GUI: fixed host key handling if the host key is set to Left Alt (Linux/Solaris hosts only; 3.2.0 regression; bug #6758)

- GUI: the VM can be minimized from the mini toolbar (bug #4952)

- GUI: handle Ctrl+Break properly on X11 hosts (3.2.0 regression; bug #6122)

- GUI: fixed the case where the user aborted the media selector for selecting the boot hard disk from the VM wizard

- GUI: added a check for Linux kernels 2.6.36 or later which are known to have the asynchronous I/O bug on ext4 / xfs file systems fixed (Linux hosts only)

- OpenSolaris guests: use SATA controller by default

- Storage: fixed I/O errors in the guest after compacting VDI images (3.2.6 regression; bug #7294)

- Storage: automatically repair base disk images with non-zero parent UUID which made them inaccessible (bug #7289)

- Storage: fixed corrupted images if a merge operation was canceled

- IDE: added ATAPI passthrough support for audio CDs

- SATA: fixed a potential hang during boot of recent Solaris guests

- SATA: handle out of disk space and similar conditions better

- iSCSI: fixed sporadic hangs when closing the connection

- VGA: fixed missing redraw with multiple screens under certain circumstances (bug #7291)

- VGA: several small fixes for legacy VGA graphics modes

- Bridged networking: fixed occasional host freeze during VM shutdown (Linux hosts only)

- NAT: don't check for the existence of the TFTP prefix when delivering a file via bootp (bug #7384)

- NAT: fixed resolving of names at the host resolver (bug #7138)

- NAT: under rare conditions the NAT engine consumed 100% CPU load (non-Windows hosts only)

- VRDP: fixed memory leak under certain circumstances (bug #5966)

- VRDP: fixed missing redraws with Windows guests under certain circumstances

- USB: properly discard blocking outstanding bulk URBs, fixes some printers

- USB: Blackberry fix (bug #6465)

- VBoxHeadless: fixed event queue processing problems which led to hangs if the VM could not be started successfully

- VBoxManage: don't crash if parameters with invalid characters are passed (bug #7388)

- VBoxManage: `clonehd`: fixed a bug where the command aborted with an error message under rare circumstances

- VBoxManage `metrics`: made it work for directly started VMs again (3.2.8 regression; bug #7482)

- 3D support: report GLX_ARB_get_proc_address as supported extension

- 3D support: guest application stack corruption when using glGetVertexAttrib[ifd]v (bug #7395)

- 3D support: fixed broken 3D support when switching to full screen / seamless modes (bug #7314)

- 3D support: fixed 32bit OpenGL apps under 64bit Windows XP/Vista (bug #7066)

- OVF: fixed bug when exporting a VM with multiple attached disks (bug #7366)

- OVF: fixed slow export for certain filesystems (bug #3719)

- OVF: disabled manifest (.mf file) support; manifests are no longer verified on import nor written on export

- Shared clipboard/Windows: improved the reliability of the shared clipboard on Windows hosts and guest (partial fix to bug #5266)

- Shared Folders: don't show an empty directory if filenames with an invalid encoding exist on the host (bug #7349)

- Shared Folders: return the proper error code when trying to list files for a non-existing wildcard (bug #7004)

- Audio: fixed guest memory corruption when capturing from the NULL audio backend (bug #6911)

- Audio: improved playback quality (less choppy)

- Web service: avoid unnecessary creation of idle threads

- Additions: fixed bug in the guest execution feature when passing more than one environment variable

- Additions: refresh all guest properties written by VBoxService after the VM was restored from a saved state

- Additions: fixed a division by zero crash of VBoxService under certain circumstances

- Additions: immediately resynchronize the guest time with the host time after the VM was restored from a saved state (bug #4018)

- Additions/Windows: fixed LsaEnumerate error when enumerating logged in users

- Additions/X.Org: support X.Org Server 1.9 (bug #7306)

- Additions/X.Org: don't crash VBoxClient during reboot

- Solaris hosts: fixed host DVD drive enumeration on Solaris 10

- Solaris hosts: added a custom core dumper to procure more data in the event of a VM crash

- Solaris guests: fixed user idle detection

- Solaris guests: fixed a possible panic in Shared Folders when using the wrong user or group IDs (bug #7295)

- Solaris guests: fixed Shared Folders from truncating files to 2GB on 32-bit guests (bug #7324)

- Windows hosts: fixed a BSOD under certain circumstances in VBoxNetFlt.sys (bug #7448)

- Linux hosts/guests: Linux 2.6.36 fixes

- Linux hosts/guests: DKMS fixes (bug #5817)

- Mac OS X hosts: fixed missing dock menu entries (bug #7392)

## Version 3.2.8 (2010-08-05)

This is a maintenance release. The following items were fixed and/or added:

- VMM: properly terminate the VM with an error if the guest is trying to switch to the PAE mode but PAE is disabled in the VM settings

- GUI: switch to native file dialogs (Windows hosts only; bug #5459)

- GUI: don't use native file dialogs on KDE hosts (Linux hosts only; bug #6809)

- 3D support: fixed GL_EXT_texture_sRGB support

- PXE: fixed ZENworks PXE boot regression

- OVF: fixed slower export and larger images under certain circumstances (3.2.6 regression; bug #7073)

- USB: properly signal an interrupt if the port suspend status changes

- USB: respect the remote-only filter

- USB: avoid VM hang when changing the configuration of certain devices (Windows hosts only)

- USB: fix a crash with older Linux kernels and non-ASCII characters in device strings (Linux hosts only; bug #6983)

- PageFusion: fixed conflict with the guest execution feature

- PageFusion: fixed stability issues with a large number of VMs

- PageFusion: fixed host crashes with guest SMP and Win64 guests

- Memory ballooning: fixed problems restoring VMs with pre-allocation enabled

- Bridged networking: fixed performance issue with GRO enabled on bridged device (bug #7059)

- Hostonly networking: fixed performance issue (3.2.6 regression; bug #7081)

- Hard disks: fix auto-reset of immutable disk at VM startup (bug #6832)

- BusLogic: several fixes for Windows NT/2000 and SCO OpenServer guests

- LsiLogic: fixed I/O errors under rare circumstances

- Sharing disks: support for attaching one disk to several VMs without external tools and tricks

- Shared Folders: several fixes and performance enhancements for Solaris guests (bugs #4154 and #6512)

- Solaris Installer: added support for remote installations

- Guest Properties API: correctly support enumerating the properties of a running VM with an empty "patterns" field (bug #7171)

- Guest properties: properly delete transient properties on shutdown

- VRDP video redirection performance improvements and stability fixes

- Settings: silently fix host audio driver when reading machine XML settings files or OVF written by VirtualBox on a different host OS, for example convert DirectSound to PulseAudio (bug #7209)

- Settings: properly store the NAT network setting in XML settings file version 1.10 and later (bug #6176)

- VBoxManage: handle differencing images with parent UUID correctly in subcommand openmedium disk (bug #6751)

- Web service: enabled HTTP keepalive for much better performance

- Web service: added timestamps to logging output

- Web service: treat 8-bit strings as UTF-8 not ASCII

- X11 Additions: fix for Xorg 6.8 guests (e.g. RHEL4)

## Version 3.2.6 (2010-06-25)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed host crash when running 64-bit guests on 32-bit hosts with certain Intel CPUs (VT-x only; bug #6166)

- VMM: allow 64-bit SMP guests on 32-bit hosts (VT-x and AMD-V only; does not apply to Mac OS X, which already supports it)

- VMM: fixed Guru mediation if guests with more than 2GB are booted with VT-x/AMD-V disabled (bug #5740)

- VMM: fixed TR limit trashing (VT-x and 64-bit host only; bug #7052)

- Page Fusion: several bug fixes for SMP guests (including bug #6964)

- Teleportation: several fixes and improvements

- Mac OS X server guests: compatibility fix

- EFI: fixed memory detection for guests with 2GB or more RAM assigned

- GUI: added a workaround for a Linux kernel bug which affecting asynchronous I/O on ext4 / xfs file systems (Linux hosts only)

- GUI: added setting for multiple VRDP connections; useful if multiple screens are enabled

- GUI: another fix for the keyboard capturing bug under metacity (bug #6727)

- GUI: fixed quit dialog when used in seamless or full screen mode (Mac OS X hosts only; bug #6938)

- GUI: handle the extra key on the Brazilian keyboard on X11 hosts again (bug #7022).

- 2D Video acceleration: fixed crashes when leaving the full screen mode (bug #6768)

- VBoxManage: fixed storageattach error handling (bug #6927)

- VBoxManage: fixed dhcpserver add (3.2.0 regression; bug #7031)

- Storage: fixed hang with images located on filesystems which don't support asynchronous I/O (bug #6905)

- Storage: fixed raw disks on Windows hosts (3.2.0 regression; bug #6987)

- LsiLogic: fixed hang with older Linux guests

- BusLogic: fixed hang during I/O

- SATA: set initial number of ports to 1 as some guests can't handle 30 ports (e.g. CentOS 4 and FreeBSD; bug #6984)

- SATA: performance improvement

- SCSI: fixed error when using the full format option during Windows installation (bug #5101)

- iSCSI: fixed authentication (bug #4031)

- Host-only/bridged networking: fixed excessive host kernel warnings under certain circumstances (Linux hosts only; 3.2.0 regression; bug #6872)

- NAT: fixed potential memory leaks

- NAT: increased the size of the memory pool for 16K Jumbo frames (performance tweak)

- NAT: allow to link/unlink the network cable even if the VM is currently paused

- E1000: disconnect cable was not properly handled if the NIC was not yet initialized by the guest

- OVF: export performance optimization

- OVF: upgraded OS type definitions to CIM 2.25.0 so that Windows 7 and other OSes are now tagged correctly on export

- Settings: the setting for disabling the host I/O cache was sometimes not properly saved

- Settings: save machine state into XML correctly even when snapshot folder has been changed to a non-default location (bug #5656)

- USB: allow the guest to disable an EHCI port

- USB: find a valid language ID before querying strings (bug #7034)

- POSIX hosts: fixed several memory leaks (3.2.0 regression)

- Solaris hosts: fixed VDI access problem under certain circumstances (IDE/SATA; 3.2.0 regression)

- Solaris hosts: fixed VM fails to start on 32-bit hosts (3.2.0 regression; bug #6899)

- Windows hosts (32-bit): increase guest RAM limit if the host kernel allows for more virtual address space

- Linux Additions: re-read a directory after a file was removed (bug #5251)

- Linux Additions: install the DRI driver in the right location on ArchLinux guests (bug #6937)

- X11 Additions: fixed spurious mouse movement events (bug #4260)

- Solaris Additions: fixed guest execution feature

- Windows Additions: automatic logon on Windows Vista/Windows 7 is now able to handle renamed and principal user accounts; added various bugfixes

- Windows Additions: improved command line parsing of the installer

- Windows Additions: fixed driver verifier bugcheck in VBoxMouse (bug #6453)

- 3D support: fixed OpenGL support for 32bit applications under 64bit Windows guests

## Version 3.2.4 (2010-06-07)

This is a maintenance release. The following items were fixed and/or added:

- GUI: fixed superfluous resize-event on powering-on VM for X11 (improvement for the 3.2.2 fix)

- GUI: fixed keyboard capturing bug under metacity (bug #6727)

- Host-only/bridged networking: fixed guest-to-guest communication over wireless (3.2.0 regression; bug #6855)

- Storage: fixed a potential guest disk corruption with growing images (3.2.0 regression)

- Page Fusion: fixed shared module detection for Win64 guests

- 3D support: allow use of CR_SYSTEM_GL_PATH again (bug #6864)

- 3D support: fixed a host assertion for some multi-threaded guest applications (bug #5236)

- 3D support: fixed host crashes with nVIDIA drivers on WDDM startup

- OVF: fixed import of OVFs with a VM description (annotation) (3.2.2 regression; bug #6914)

- VRDP: fixed issues with secondary monitors (bug #6759)

## Version 3.2.2 (2010-06-02)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed rare invalid guest state guru meditation (VT-x only)

- VMM: fixed poor performance with nested paging and unrestricted guest execution (VT-x only; bug #6716)

- VMM: fixed occasional guru meditation during Windows 7 bootup (bug #6728)

- GUI: keep the status for remote control in sync with the actual state

- GUI: don't exit after a successful refresh of an invalid VM configuration

- GUI: fixed keyboard capturing bug under metacity (bug #6727)

- GUI: fixed crash during VM termination if a modal dialog is open

- GUI: default controllers names of New VM Wizard are synchronized with VM settings

- GUI: fixed superfluous resize-event on powering-on VM for X11

- GUI: fixed regression - missed USB item's tool-tip of USB devices menu

- GUI: Activate VM window on mouse-hovering for multi-monitor VMs

- VBoxSDL/Linux hosts: automated keyboard type detection (bug #5764)

- SATA: fixed crash during VM suspend under rare circumstances

- SATA: fixed crash during VM reset after a snapshot was taken

- Storage: fixed sporadic hang of SMP guests using SATA or LSI Logic SCSI and asynchronous I/O

- Virtio-net: fix for guests with more than about 4GB RAM (bug #6784)

- Page Fusion: fixed VBoxService crash with enabled Page Fusion on Win64 guests

- Page Fusion: added kernel module sharing

- HGCM: fixed memory leak which showed up if the Guest Additions were accessing a non-existing HGCM service

- Teleportation: several fixes

- Floppy: don't disable the host I/O cache by default

- USB: fixed 3.1 regression with certain devices (e.g. iPhone); Windows host only

- Serial: updated the guest device emulation to 16550A and reduced the probability for losing bytes during transmission (bug #1548)

- NAT: re-fetch the name server parameters from the host on guest DHCP requests to handle host network switches more gracefully (bug #3847)

- NAT: fixed parsing of IPv4 addresses in CIDR notation (bug #6797)

- NAT: limit the number of name servers passed to the guest to four (non-Windows hosts only; bug #4098)

- NAT: fixed DNS transaction ID mismatch (bug #6833)

- VDE: fixed changing the attachment during runtime

- Bridged networking: fixed memory leak in the Bridged Networking driver for Windows hosts (bug #6824)

- Windows Additions: fix for NT4 guests (bug #6748)

- Windows Additions: re-introduced system preparation feature

- Linux guests: enable PAE for RedHat guests by default

- Linux guests: fix support for disabling mouse integration (bug #6714)

- Web service: fixed a rare crash when calling IGuest methods from the web service

- OVF: fixed wrong hard disk UUIDs on export (bug #6802)

- OVF: fixed 3.2.0 regression importing legacy OVF 0.9 files

- 3D support: fixed OpenGL support for 64bit applications on windows guests

- 3D support: fixed various host crashes (bugs #2954, #5713, #6443)

## Version 3.2.0 (2010-05-18)

This version is a major update. The following major new features were added:

- Following the acquisition of Sun Microsystems by Oracle Corporation, the product is now called "Oracle VM VirtualBox" and all references were changed without impacting compatibility

- Experimental support for Mac OS X Server guests (see intro-macosxguests)

- Memory ballooning to dynamically in- or decrease the amount of RAM used by a VM (64-bit hosts only) (see guestadd-balloon)

- Page Fusion automatically de-duplicates RAM when running similar VMs thereby increasing capacity. Currently supported for Windows guests on 64-bit hosts (see guestadd-pagefusion)

- CPU hot-plugging for Linux (hot-add and hot-remove) and certain Windows guests (hot-add only) (see cpuhotplug)

- New Hypervisor features: with both VT-x/AMD-V on 64-bit hosts, using large pages can improve performance (see nestedpaging); also, on VT-x, unrestricted guest execution is now supported (if nested paging is enabled with VT-x, real mode and protected mode without paging code runs faster, which mainly speeds up guest OS booting)

- Support for deleting snapshots while the VM is running

- Support for multi-monitor guest setups in the GUI for Windows guests (see settings-display)

- USB tablet/keyboard emulation for improved user experience if no Guest Additions are available (see settings-motherboard)

- LsiLogic SAS controller emulation (see harddiskcontrollers)

- VRDP video acceleration (see vrde-videochannel)

- NAT engine configuration via API and VBoxManage

- Use of host I/O cache is now configurable (see iocaching)

- Guest Additions: added support for executing guest applications from the host system (replaces the automatic system preparation feature; see guestadd-guestcontrol)

- OVF: enhanced OVF support with custom namespace to preserve settings that are not part of the base OVF standard

In addition, the following items were fixed and/or added:

- VMM: fixed Windows 2000 guest crash when configured with a large amount of RAM (bug #5800)

- Linux/Solaris guests: PAM module for automatic logons added

- GUI: guess the OS type from the OS name when creating a new VM

- GUI: added VM setting for passing the time in UTC instead of passing the local host time to the guest (bug #1310)

- GUI: fixed seamless mode on secondary monitors (bugs #1322 and #1669)

- GUI: offer to download the user manual in the OSE version (bug #6442)

- GUI: allow to set an empty host key to disallow any host key combination (bug #684)

- GUI: allow to restrict the possible actions when shutting down the VM from the GUI

- Main: allow to start a VM even if a virtual DVD or floppy medium is not accessible

- Settings: be more robust when saving the XML settings files

- Mac OS X: rewrite of the CoreAudio driver and added support for audio input (bug #5869)

- Mac OS X: external VRDP authentication module support (bug #3106)

- Mac OS X: moved the realtime dock preview settings to the VM settings (no global option anymore). Use the dock menu to configure it

- Mac OS X: added the VM menu to the dock menu

- 3D support: fixed corrupted surface rendering (bug #5695)

- 3D support: fixed VM crashes when using ARB_IMAGING (bug #6014)

- 3D support: fixed assertion when guest applications uses several windows with single OpenGL context (bug #4598)

- 3D support: added GL_ARB_pixel_buffer_object support

- 3D support: added OpenGL 2.1 support

- 3D support: fixed Final frame of Compiz animation not updated to the screen (Mac OS X only) (bug #4653)

- 3D support: fixed blank screen after loading snapshot of VM with enabled Compiz

- Added support for Virtual Distributed Ethernet (VDE) (Linux hosts only; see networkingmodes)

- Added support for virtual high precision event timer (HPET)

- OVF: fixed mapping between two IDE channels in OVF and the one IDE controller in VirtualBox

- OVF: fix VMDK format string identifiers and sort XML elements from rasd: namespace alphabetically as prescribed by standard

- VBoxShell: interactive Python shell extended to be fully functional TUI for VirtualBox

- Linux Additions: support Fedora 13 (bug #6370)

- VBoxManage: fixed overly strict checks when creating a raw partition VMDK (bugs #688, #4438)

## Version 3.1.8 (2010-05-10)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed crash with the OpenSUSE 11.3 milestone kernel during early boot (software virtualization only)

- VMM: fixed invalid state during teleportation

- VMM: fixed OS/2 guest crash with nested paging enabled

- VMM: fixed massive display performance loss (AMD-V with nested paging only)

- GUI: fixed off-by-one bug when passing absolute mouse coordinates to the guest (3.1.6 regression)

- GUI: show the real version of the Guest Additions, not the interface version

- GUI: when adding a DVD or floppy slot in the VM mass storage settings dialog, don't attach a random medium but just leave the slot empty

- GUI: added `--seamless` and `--fullscreen` command line switches (bug #4220)

- GUI: fixed a SEGFAULT under rare circumstances

- 2D Video acceleration: fixed display issues when working with non 32-bit modes (bugs #6094 & #6208)

- LsiLogic: fixed detection of hard disks attached to port 0 when using the drivers from LSI

- ATA: fixed sporadic crash with Linux guests when having a hard disk and DVD drive on the same channel (bug #6079)

- Network: allow to start a VM even if not all network adapters are attached

- Network: promiscuous mode support for e1000 and paravirtualized adapters (bug #6519)

- NAT: fixed ICMP latency (non-Windows hosts only; bug #6427)

- SCSI: fixed guest crashes under certain circumstances when booting from SCSI devices

- VBoxManage: fixed several bugs in cloning of images (one of them is bug #6408)

- VBoxManage: fixed modifyvm --natnet default

- Solaris hosts: fixed a kernel panic when bridged networking might fail to initialize

- Solaris hosts: fixed priority tagged VLAN packets in bridged networking

- Shared Folders: fixed issue with copying read-only files (Linux guests only; bug #4890)

- Shared Folders: renamed the guest kernel module from vboxvfs to vboxsf to make it load on demand by the Linux kernel. Fixes mounting from /etc/fstab in Ubuntu 10.04

- Shared Folders: fixed setuid file permissions (Solaris guests only)

- Shared Folders: fixed deleting directories recursively (Solaris guests only; bug #6513)

- Guest Additions: support seamless and dynamic resizing on certain older X11 guests (bug #5840)

- Solaris Additions: fixed OpenGL library dependencies (bug #6435)

- Keyboard/Mouse emulation: fixed handling of simultaneous mouse/keyboard events under certain circumstances (bug #5375)

- Mouse emulation: never switch straight back from Explorer to IntelliMouse mode as it confuses the FreeBSD mouse driver (bug #6488)

- SDK: fixed memory leak in IDisplay::takeScreenShotSlow() (bug #6549)

- 3D support: fixed Final frame of Compiz animation not updated to the screen (Mac OS X only) (bug #4653)

- VRDP: allow to bind to localhost only on Mac OS X (bug #5227)

- Linux hosts: add host USB support for Ubuntu 10.04 and other hosts without the hal daemon or usbfs (bug #6343)

- Web service: more structs and array fixes in PHP bindings

- Windows hosts: make the bridged networking driver notify dll be correctly unregistred on uninstall (bug #5780)

## Version 3.1.6 (2010-03-25)

This is a maintenance release. The following items were fixed and/or added:

- Linux hosts: fixed timing issue on hosts with Linux kernels 2.6.31 or later with certain CPUs (asynchronous timer mode; bug #6250)

- Linux hosts: properly handle host suspend/resume events on Linux kernels 2.6.30 or later (bug #5562)

- Mac OS X hosts: fixed VBoxSVC crash while enumerating the host network interfaces under certain circumstances

- Snapshots: fixed image corruption after snapshot merge under certain circumstances (bug #6023)

- Snapshots: fixed crash with VBoxHeadless / OSE

- VMM: fixed reference counting guru meditation (bug #4940)

- VMM: improved guest SMP stability

- VMM: fixed VT-x hardware debug issues (bugs #477 & #5792)

- VMM: fixed PGMDynMapHCPage guru meditation (Mac OS X; VT-x only; bug #6095)

- VMM: fixed pgmPoolTrackFlushGCPhysPTInt guru meditations (Mac OS X; VT-x only; bugs #6095 & #6125)

- VMM: fixed host crash when running PAE guests in VT-X mode (Mac OS X only; bug #5771)

- GUI: fix displaying of error message (bug #4345)

- GUI: fix inability to enter seamless mode (bugs #6185, #6188)

- 3D support: fixed assertion and flickering when guest application uses several windows with a single OpenGL context (bug #4598)

- 3D support: fixed host crashes when using GL_EXT_compiled_vertex_array and array element calls (bug #6165)

- 3D support: fixed runtime linker errors with OpenGL guest libs (bug #5297)

- 3D support: fixed OpenGL extension viewer crash on startup (bug #4962)

- NAT: fixed a 3.1.4 regression on Windows hosts where graceful connection termination was broken (bug #6237)

- NAT: alternative network setting was not stored persistent (bug #6176)

- NAT: fixed memory corruption during ICMP traffic under certain circumstances

- Network: allow to switch the host interface or the internal network while a VM is running (bug #5781)

- VHD: fix for images with a block size different than 2MB

- USB: fixed filtered device attach regression (bug #6251)

- USB: fixed crash in OHCI under rare circumstances (bug #3571)

- VRDP: fixed hang under rare circumstances when attaching USB devices

- ACPI: prevent guest freezes when accessing /proc/acpi for determining the state of the host battery and the AC adapter (Linux hosts only; bug #2836)

- PulseAudio: fixed guest freezes under certain conditions (3.1.4 regression; bug #6224)

- BIOS: increased space for DMI strings

- BIOS: fixed interrupt routing problem for certain configurations (I/O-APIC enabled, ACPI not used; bug #6098)

- iSCSI: be more robust when handling the INQUIRY response

- iSCSI: be more robust when handling sense data

- BusLogic: fixed FreeBSD guests

- Web service: vboxwebsrv is now multithreaded

- Web service: fixed handling of structs and arrays in PHP bindings

- Solaris Installer: fixed netmask to stay persistent across reboots for Host-only interface (bug #4590)

- Linux installer: removed external dependency to libpng12.so (bug #6243)

- Solaris Additions: fixed superfluous kernel logging (bug #6181)

- Linux Additions: fixed hang when starting the X server in Fedora12 guests and in guests with Linux 2.6.33 or later (bug #6198)

- Linux Additions: support Mandriva speedboot runlevel (bug #5484)

- Linux Additions: fixed SELinux security context of mount.vboxsf (bug #6362)

- Linux Additions: support Ubuntu 10.04 (bug #5737)

- Web service: update PHP bindings to fix problems with enums and collections

## Version 3.1.4 (2010-02-12)

This is a maintenance release. The following items were fixed and/or added:

- VMM: SMP stability fixes

- VMM: fixed guru meditation in certain rare cases (bug #5968)

- VMM: activate NXE for PAE enabled guests (VT-x and AMD-V on 32 bits hosts only; bug #3578)

- VMM: added workaround for broken BIOSes that make VirtualBox think AMD-V is in use (for details see bug #5639)

- VMM: fixed rare host reboot when restoring a saved state (bug #3945)

- VMM: fixed incompatibility with 2.6.32 Linux kernels (software virtualization only; bug #6100)

- VMM: turn on nested paging by default for new VMs (if available; VT-x and AMD-V only)

- VMM: turn on VPID by default for new VMs (if available; VT-x only)

- VMM: perform strict CPUID compatibility checks when teleporting; to get the old behavior set "VBoxInternal/CPUM/StrictCpuIdChecks" to 0

- VMM: fixed VM crash with certain 16 bits Windows applications (software virtualization only; bug #5399)

- Snapshots: fixed a 3.1 regression that broke deletion of snapshots when a machine had immutable or writethrough storage attached (bug #5727)

- Saved state: fixed VERR_SSM_LOADED_TOO_MUCH error when loading DisplayScreenshot(bug #6162)

- VBoxManage: add restorecurrent operation to snapshots command

- VBoxManage: fixed broken snapshot lookup by name (bug #6070

- GUI: fixed the broken "Reload" button that reloads the machine XML when a machine is inaccessible

- GUI: fixed guest full screen mode after reboot (bug #5372)

- GUI: handle Ctrl+Break properly on X11 hosts (bug #6122)

- GUI: fixed status LEDs for storage devices

- GUI: workaround for disabling the seamless mode on KDE hosts (KWin bug)

- 3D support: fixed SELinux warning saying VBoxOGL.so requires text relocation (bug #5690)

- 3D support: fixed Corrupted surface rendering (bug #5695)

- 3D support: free textures on guest application termination (bug #5206)

- 3D support: fixed ubigraph_server crashes (bug #4674)

- 3D support: fixes for 64-bit Solaris guests

- Seamless: disable seamless mode when guest changes screen resolution (bug #5655)

- NAT: fixed high CPU load under certain circumstances (Windows hosts only; bug #5787)

- NAT: fixed handling of the broadcast flag in DHCP requests

- NAT: fixed rare crash due to an assertion in the ICMP code (bug #3217)

- Virtio-net: don't crash when ports accessed beyond the valid range (bug #5923)

- LsiLogic: fix for Windows 7 guests

- ATA: fix for guru meditation when installing Solaris 8 guests (bug #5972)

- VHD: fixed an incompatibility with Virtual PC (bug #5990)

- VHD: update the footer backup after setting a new UUID (bug #5004)

- Host DVD: really fixed loading "passthrough" setting from configuration file (bug #5681)

- Shared Folders: fixed resolving of symlink target on Linux (3.1.2 regression)

- VRDP: fixed VERR_NET_ADDRESS_IN_USE error when restarting a VM (3.1 regression; bug #5902)

- VRDP: fixed crash on Mac OS X when 3D is enabled (3.1 regression)

- PulseAudio: fixed recording (bug #4302)

- USB: fixed a shutdown blue screen (Windows hosts only; bug #5885)

- BIOS: fixed attribute during text scroll (bug #3407)

- OVF: fix strange error messages on disk import errors

- OVF: do not require write access to the .ovf file during import (3.1 regression; bug #5762)

- iSCSI: fix taking snapshots of a running VM (bug #5849)

- Solaris hosts: several USB fixes (including support for Apple iPod; bug #5873)

- Solaris installer: fixed USB module removal and Solaris 10 "id" binary incompatibility

- Guest Additions: fixed wrong guest time adjustment if the guest clock is ahead (3.1 regression; non-Windows guests only)

- Linux Additions: fixed shared folders for Linux 2.6.32 guests (bug #5891)

- Linux Additions: make the mouse driver work on Debian 5.0.3 guests again (3.1.2 regression; bug #5832)

- Windows Additions: fixed malfunctioning VBoxService that broke time-sync (bug #5872)

- Windows Additions: fixed uninstallation issues on 64-bit guests

- Windows Additions: fixed some sysprep execution issues

- X.Org Additions: never reject the saved video mode as invalid (bug #5731)

- XFree86 Additions: accept video mode hints for the initial mode again

## Version 3.1.2 (2009-12-17)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed SMP stability regression

- USB: fixed USB related host crashes on 64 bits Windows hosts (bug #5237)

- Main: wrong default HWVirtExExclusive value for new VMs (bug #5664)

- Main: DVD passthrough setting was lost (bug #5681)

- VBoxManage: iSCSI disks do not support adding a comment (bug #4460)

- VBoxManage: added missing --cpus and --memory options to OVF --import

- GUI: fixed VBox URL in update dialog for German and Dutch languages

- GUI: NLS updates

- OVF: fixed export of non standard storage controller names (bug #5643)

- Solaris hosts: several USB fixes (including support for Apple iPhone)

- Mac OS X hosts: several fixes for the 3D support

- Mac OS X hosts: re-enabled CMD+Key combinations, even if the Host-Key isn't CMD (bug #5684)

- Mac OS X hosts: fixed to fast scrolling if the mouse wheel is used inside the guest (bug #5672)

- Mac OS X hosts: dock & menubar don't disappear in full screen when the VM is not running on the primary display (bug #1762)

- Mac OS X hosts: added an option for enabling "Auto show Dock & Menubar in full screen" (bug #5636)

- Windows host installer: fixed starting VBox with wrong privileges right after installation (bug #4162)

- Host interface and host-only networking: prevent driver from unloading while a VM is still active (Windows host only)

- Host-only networking: fixed host-only interface creation (Windows host only) (bug #5708)

- Virtio-net: don't crash without an attached network

- Virtio-net: fixed the issue with intermittent network in VM with several virtual CPU cores

- NAT: fixed port-forwarding regressions (bug #5666)

- NAT: fixed crash under certain conditions (bug #5427)

- NAT: fixed resolving of names containing a slash or underscore when using the host resolver DNS proxy (bug #5698)

- ATA: fixed sporadic crash when resuming after a VM was forcefully paused (e.g. due to iSCSI target being unavailable)

- SATA: fixed raw vmdk disks (bug #5724)

- Linux guests: increased the default memory for Redhat and Fedora guests

- Linux Additions: fixed installation on RHEL 3.9 guests and on some 64bit guests

- Linux Additions: prevent SELinux warnings concerning text relocations in VBoxOGL.so (bug #5690)

- X11 guests: fixed mouse support for some Xorg 1.4 guests (openSUSE 11.0)

- X11 guests: fixed xorg.conf modification for some older Xorg releases (openSUSE 11.1)

- Windows guests: fixed some VBoxService shutdown issues

- Windows guests: fixed VBoxVideo spinlock issues on NT4

- Windows Guest Additions: fixed uninstallation issues of NT4

- Shared Folders: fixed resolving of symlink target (bug #5631)

- 2D Video acceleration: delay loading of OpenGL dlls for Windows hosts to avoid GUI crashes on misconfigured systems

- 2D Video acceleration: fixed issues with video picture not displayed on playback

## Version 3.1.0 (2009-11-30)

This version is a major update. The following major new features were added:

- Teleportation (aka live migration); migrate a live VM session from one host to another (see teleporting)

- VM states can now be restored from arbitrary snapshots instead of only the last one, and new snapshots can be taken from other snapshots as well ("branched snapshots"; see snapshots)

- 2D video acceleration for Windows guests; use the host video hardware for overlay stretching and color conversion (see guestadd-2d)

- More flexible storage attachments: CD/DVD drives can be attached to arbitrary storage controllers, and there can be more than one such drive (storage)

- The network attachment type can be changed while a VM is running

- Complete rewrite of experimental USB support for OpenSolaris hosts making use of the latest USB enhancements in Solaris Nevada 124 and higher

- Significant performance improvements for PAE and AMD64 guests (VT-x and AMD-V only; normal (non-nested) paging)

- Experimental support for EFI (Extensible Firmware Interface; see efi)

- Support for paravirtualized network adapters (virtio-net; see nichardware)

In addition, the following items were fixed and/or added:

- VMM: guest SMP fixes for certain rare cases

- GUI: snapshots include a screenshot

- GUI: locked storage media can be unmounted by force

- GUI: the log window grabbed all key events from other GUI windows (bug #5291)

- GUI: allow to disable USB filters (bug #5426)

- GUI: improved memory slider in the VM settings

- 3D support: major performance improvement in VBO processing

- 3D support: added GL_EXT_framebuffer_object, GL_EXT_compiled_vertex_array support

- 3D support: fixed crashes in FarCry, SecondLife, Call of Duty, Unreal Tournament, Eve Online (bugs #2801, #2791)

- 3D support: fixed graphics corruption in World of Warcraft (bug #2816)

- 3D support: fixed Final frame of Compiz animation not updated to the screen (bug #4653)

- 3D support: fixed incorrect rendering of non ARGB textures under compiz

- iSCSI: support iSCSI targets with more than 2TiB capacity

- VRDP: fixed occasional VRDP server crash (bug #5424)

- Network: fixed the E1000 emulation for QNX (and probably other) guests (bug #3206)

- NAT: added host resolver DNS proxy (see nat_host_resolver_proxy)

- VMDK: fixed incorrectly rejected big images split into 2G pieces (bug #5523, #2787)

- VMDK: fixed compatibility issue with fixed or raw disk VMDK files (bug #2723)

- VHD: fixed incompatibility with Hyper-V

- Support for Parallels version 2 disk image (HDD) files; see vdidetails

- OVF: create manifest files on export and verify the content of an optional manifest file on import

- OVF: fixed memory setting during import (bug #4188)

- Mouse device: now five buttons are passed to the guest (bug #3773)

- VBoxHeadless: fixed loss of saved state when VM fails to start

- VBoxSDL: fixed crash during shutdown (Windows hosts only)

- X11 based hosts: allow the user to specify their own scan code layout (bug #2302)

- Mac OS X hosts: don't auto show the menu and dock in full screen (bug #4866)

- Mac OS X hosts (64 bit): don't interpret mouse wheel events as left click (bug #5049)

- Mac OS X hosts: fixed a VM abort during shutdown under certain conditions

- Solaris hosts: combined the kernel interface package into the VirtualBox main package

- Solaris hosts: support for OpenSolaris Boomer architecture (with OSS audio backend)

- Shared Folders: VBOXSVR is visible in Network folder (Windows guests, bug #4842)

- Shared Folders: performance improvements (Windows guests, bug #1728)

- Windows, Linux and Solaris Additions: added balloon tip notifier if VirtualBox host version was updated and Additions are out of date

- Solaris guests: fixed keyboard emulation (bug #1589)

- Solaris Additions: fixed as_pagelock() failed errors affecting guest properties (bug #5337)

- Windows Additions: added automatic logon support for Windows Vista and Windows 7

- Windows Additions: improved file version lookup for guest OS information

- Windows Additions: fixed runtime OS detection on Windows 7 for session information

- Windows Additions: fixed crash in seamless mode (contributed by Huihong Luo)

- Linux Additions: added support for uninstalling the Linux Guest Additions (bug #4039)

- Linux guest shared folders: allow mounting a shared folder if a file of the same name as the folder exists in the current directory (bug #928)

- SDK: added object-oriented web service bindings for PHP5

## Version 3.0.12 (2009-11-10)

This is a maintenance release. The following items were fixed and/or added:

- VMM: reduced IO-APIC overhead for 32 bits Windows NT/2000/XP/2003 guests; requires 64 bits support (VT-x only; bug #4392)

- VMM: fixed double timer interrupt delivery on old Linux kernels using IO-APIC (caused guest time to run at double speed; bug #3135)

- VMM: re-initizalize VT-x and AMD-V after host suspend or hibernate; some BIOSes forget this (Windows hosts only; bug #5421)

- VMM: fixed loading of saved state when RAM preallocation is enabled

- BIOS: ignore unknown shutdown codes instead of causing a guru meditation (bug #5389)

- GUI: never start a VM on a single click into the selector window (bug #2676)

- Serial: reduce the probability of lost bytes if the host end is connected to a raw file

- VMDK: fixed handling of split image variants and fix a 3.0.10 regression (bug #5355)

- VRDP: fixed occasional VRDP server crash

- Network: even if the virtual network cable was disconnected, some guests were able to send / receive packets (E1000; bug #5366)

- Network: even if the virtual network cable was disconnected, the PCNet card received some spurious packets which might confuse the guest (bug #4496)

- Shared Folders: fixed changing case of file names (bug #2520)

- Windows Additions: fixed crash in seamless mode (contributed by Huihong Luo)

- Linux Additions: fixed writing to files opened in O_APPEND mode (bug #3805)

- Solaris Additions: fixed regression in Guest Additions driver which among other things caused lost guest property updates and periodic error messages being written to the system log

## Version 3.0.10 (2009-10-29)

This is a maintenance release. The following items were fixed and/or added:

- VMM: guest SMP stability fixes

- VMM: fixed guru meditation with nested paging and SMP guests (bug #5222)

- VMM: changed VT-x/AMD-V usage to detect other active hypervisors; necessary for e.g. Windows 7 XP compatibility mode (Windows & Mac OS X hosts only; bug #4239)

- VMM: guru meditation during SCO OpenServer installation and reboot (VT-x only; bug #5164)

- VMM: fixed accessed bit handling in certain cases (bug #5248)

- VMM: fixed VPID flushing (VT-x only)

- VMM: fixed broken nested paging for 64 bits guests on 32 bits hosts (AMD-V only; bug #5285)

- VMM: fixed loading of old saved states/snapshots (bug #3984)

- Mac OS X hosts: fixed memory leaks (bug #5084)

- Mac OS X hosts (Snow Leopard): fixed redraw problem in a dual screen setup (bug #4942)

- Windows hosts: installer updates for Windows 7

- Solaris hosts: out of memory handled incorrectly (bug #5241)

- Solaris hosts: the previous fix for #5077 broke the DVD host support on Solaris 10 (VBox 3.0.8 regression)

- Linux hosts: fixed module compilation against Linux 2.6.32rc4 and later

- Guest Additions: fixed possible guest OS kernel memory exhaustion

- Guest Additions: fixed stability issues with SMP guests

- Windows Additions: fixed color depth issue with low resolution hosts, netbooks, etc. (bug #4935)

- Windows Additions: fixed NO_MORE_FILES error when saving to shared folders (bug #4106)

- Windows Additions: fixed subdirectory creation on shared folders (bug #4299)

- Linux Additions: sendfile() returned -EOVERFLOW when executed on a shared folder (bug #2921)

- Linux Additions: fixed incorrect disk usage value (non-Windows hosts only)

- Linux installer: register the module sources at DKMS even if the package provides proper modules for the current running kernel

- 3D support: removed invalid OpenGL assertion (bug #5158)

- Network: fixed the Am79C973 PCNet emulation for QNX (and probably other) guests (bug #3206)

- VMDK: fix handling of split image variants

- VHD: do not delay updating the footer when expanding the image to prevent image inconsistency

- USB: stability fix for some USB 2.0 devices

- GUI: added a search index to the .chm help file

- GUI/Windows hosts: fixed CapsLock handling on French keyboards (bug #2025)

- Shared clipboard/X11 hosts: fixed a crash when clipboard initialisation failed (bug #4987)

## Version 3.0.8 (2009-10-02)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed 64 bits guest on 32 bits host regression in 3.0.6 (VT-x only; bug #4947)

- VMM: fixed a recompiler triple fault guru meditation (VT-x & AMD-V only; bug #5058)

- VMM: fixed hang after guest state restore (AMD-V, 32 bits Windows guest and IO-APIC enabled only; bug #5059)

- VMM: fixed paging issue with OS/2 guests

- VMM: fixed guru meditation in rare cases (2.0 regression; software virtualization only)

- VMM: fixed release assertion during state restore when using the Sound Blaster 16 emulation (bug #5042)

- Security: fixed vulnerability that allowed to execute commands with root privileges

- Linux hosts: fixed runtime assertion in semaphore implementation which was triggered under certain conditions (bug #616)

- Linux hosts: change the default USB access mode on certain distributions (bugs #3394 and #4291)

- Linux hosts: on hardened Gentoo, the VBoxSVC daemon crashed by opening the VM network settings (bug #3732)

- Linux hosts, Solaris hosts: pass the XAUTHORITY variable along the DISPLAY variable when starting a VM from VBoxManage or from the VM selector (bug #5063)

- Linux hosts: use sysfs to enumerate host drives if hal is not available

- Solaris hosts: fixed a bug which would hang the host sporadically as interrupts were not re-enabled every time

- Solaris hosts: fixed a kernel panic with bridged and host-only networking (bug #4775)

- Solaris hosts: fixed incorrectly persistent CD/DVD-ROMs when changing them (bug #5077)

- X11-based hosts: support additional function keys on Sun keyboards (bug #4907)

- Mac OS X hosts (Snow Leopard): fixed problem starting headless VMs without a graphical session (bug #5002)

- Mac OS X hosts: fixed problem listing host-only adapter names with trailing garbage (attached VMs won't start)

- Windows Additions: now work with Vista 64-bit Home editions (bug #3865)

- Windows Additions: fixed screen corruption with ZoomText Magnifier

- Windows Additions: fixed NPGetUniversalName failure (bug #4853)

- Windows Additions: fixed Windows NT regression (bug #4946)

- Windows Additions: fixed VBoxService not running if no Shared Folders are installed

- Linux Additions: implemented ftrunctate (bug #4771)

- VRDP: start VM even if configured VRDP port is in use

- Networking: the PCnet network device stopped receiving under rare conditions (bug #4870)

- VBoxManage: implemented `controlvm vrdpport` command

- iSCSI: fixed issue with NetApp targets (bug #5072)

- SCSI: add support for virtual disks larger than 2TB

- USB: fixed potential crash when unplugging USB2 devices (bug #5089)

- NAT: IPSEC did not properly work with Linux guests (bug #4801)

## Version 3.0.6 (2009-09-09)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed IO-APIC overhead for 32 bits Windows NT, 2000, XP and 2003 guests (AMD-V only; bug #4392)

- VMM: fixed a Guru meditation under certain circumstances when enabling a disabled device (bug #4510)

- VMM: fixed a Guru meditation when booting certain Arch Linux guests (software virtualization only; bug #2149)

- VMM: fixed hangs with 64 bits Solaris & OpenSolaris guests (bug #2258)

- VMM: fixed decreasing rdtsc values (AMD-V & VT-x only; bug #2869)

- VMM: small Solaris/OpenSolaris performance improvements (VT-x only)

- VMM: cpuid change to correct reported virtual CPU ID in Linux

- VMM: NetBSD 5.0.1 CD hangs during boot (VT-x only; bug #3947)

- Solaris hosts: worked around an issue that caused the host to hang (bug #4486)

- Solaris hosts: fixed a rare host system deadlock when using bridged networking

- Solaris hosts: fixed a potential host system deadlock when CPUs were onlined or offlined

- Solaris hosts installer: added missing dependency for UTF-8 package (bug #4899)

- Linux hosts: don't crash on Linux PAE kernels < 2.6.11 (in particular RHEL/CentOS 4); disable VT-x on Linux kernels < 2.6.13 (bug #1842)

- Linux/Solaris hosts: correctly detect keyboards with fewer keys than usual (bug #4799)

- Mac OS X hosts: prevent password dialogs in 32 bits Snow Leopard

- Python WS: fixed issue with certain enumerations constants having wrong values in Python web services bindings

- Python API: several threading and platform issues fixed

- Python shell: added exportVM command

- Python shell: various improvements and bugfixes

- Python shell: corrected detection of home directory in remote case

- OVF: fixed XML comment handling that could lead to parser errors

- Main: fixed a rare parsing problem with port numbers of USB device filters in machine settings XML

- Main: restrict guest RAM size to 1.5 GB (32 bits Windows hosts only)

- Main: fixed possible hang during guest reboot (bug #3792)

- GUI: fixed rare crash when removing the last disk from the media manager (bug #4795)

- VBoxManage: fixed `guestproperty` for Mac OS X hosts (bug #3806)

- VBoxManage: fixed setting guest properties with --flags or -flags

- Web service: fixed a severe memory leak, at least on platforms using XPCOM

- Serial: fixed host mode (Solaris, Linux and Mac OS X hosts; bug #4672)

- VRDP: Remote USB Protocol version 3

- SATA: fixed hangs and BSODs introduced with 3.0.4 (bugs #4695, #4739, #4710)

- SATA: fixed a bug which prevented Windows 7 from detecting more than one hard disk

- SATA/SCSI: fixed rare random guest crashes and hangs

- SCSI: fixed problem with Fedora 11 refusing to boot after kernel update

- iSCSI: fix logging out when the target has dropped the connection, fix negotiation of parameters, fix command resend when the connection was dropped, fix processing SCSI status for targets which do not use phase collapse

- BIOS: fixed a bug that caused the OS/2 boot manager to fail (2.1.0 regression; bug #3911)

- PulseAudio: don't hang during VM termination if the connection to the server was unexpectedly terminated (bug #3100)

- Mouse: fixed weird mouse behaviour with SMP (Solaris) guests (bug #4538)

- HostOnly Network: fixed failure in CreateHostOnlyNetworkInterface() on Linux (no GUID)

- HostOnly Network: fixed wrong DHCP server startup while hostonly interface bringup on Linux

- HostOnly Network: fixed incorrect factory and default MAC address on Solaris

- HostOnly Network: fixed the problem with listing host-only interfaces on Mac OS X when all physical interfaces are down (bugs #4698, #4790)

- DHCP: fixed a bug in the DHCP server where it allocated one IP address less than the configured range

- E1000: fixed receiving of multicast packets

- E1000: fixed up/down link notification after resuming a VM

- NAT: fixed Ethernet address corruptions (bug #4839)

- NAT: fixed hangs, dropped packets and retransmission problems (bug #4343)

- Bridged networking: fixed packet queue issue which might cause DRIVER_POWER_STATE_FAILURE BSOD for Windows hosts (bug #4821)

- Windows Additions: fixed a bug in VBoxGINA which prevented selecting the right domain when logging in the first time

- Windows host installer: should now also work on unicode systems (like Korean, bug #3707)

- Windows host installer: check for sufficient disk space

- Shared clipboard: do not send zero-terminated text to X11 guests and hosts (bug #4712)

- Shared clipboard: use a less CPU intensive way of checking for new data on X11 guests and hosts (bug #4092)

- Guest Additions: do not hide the host mouse cursor when restoring a saved state (bug #4700)

- Windows guests: fixed issues with the display of the mouse cursor image (bugs #2603, #2660 and #4817)

- SUSE 11 guests: fixed Guest Additions installation (bug #4506)

- Guest Additions: support Fedora 12 Alpha guests (bugs #4731, #4733 and #4734)

## Version 3.0.4 (2009-08-04)

This is a maintenance release. The following items were fixed and/or added:

- VMM: 64 bits guest stability fixes (AMD-V only; bugs #3923 & #3666)

- VMM: SMP stability fixes (AMD-V only)

- VMM: SMP performance improvement (esp. for Solaris guests)

- VMM: eliminated several bugs which could lead to a host reboot

- VMM: fixed OS/2 ACP2 boot floppy hang (VT-x only)

- VMM: small performance improvement for OpenSolaris guests (AMD-V only)

- VMM: fixed CentOS/Xen reboot (software virtualization only; bug #4509)

- SATA: fixed hangs / BSOD during Windows XP installation (bug #4342)

- SATA: mark the ports as non hotpluggable (bug #3920)

- 3D support: fix deadlocks and context/window tracking for multithreaded applications (bug #3922)

- 3D support: fix memory leaks when terminating OpenGL guest applications

- 3D support: fix crash in Call of Duty

- NAT: using two or more NAT adapters in one VM was broken (3.0.0 regression)

- NAT: fixed network communication corruptions (bugs #4499, #4540, #4591, #4604)

- NAT: fixed passive ftp access to host server (bug #4427)

- iSCSI: fixed cloning to/from iSCSI disks

- GUI: fixed path separator handling for the OVF export on Windows (bug #4354)

- GUI: the mini toolbar was only shown on the first host display (bug #4654)

- GUI: added a VM option to display the mini toolbar on top

- GUI: don't crash when adding plus configuring host-only network interfaces

- Shared Folders: fixed selection of a drive root directory as a shared folder host path in VirtualBox (Windows host only)

- USB: fixed a bug that may have rendered USB device filter settings inactive (3.0.2 regression; bug #4668)

- Guest Additions: report the Guest Additions version to the guest properties (bug #3415)

- Mac OS X hosts: fix creation of VMDK files giving raw partition access (bug #1461)

- Mac OS X hosts: improved support for Snow Leopard

- Linux hosts: fixed problems leading to wrong colors or transparency in host windows with some graphics drivers (bug #3095)

- Linux hosts: hardware detection fallbacks if the hal service fails to find any DVD drives

- Linux and Solaris hosts: Work around color handling problems in Qt (bug #4353)

- Solaris hosts: fixed memory leaks in host-only networking

- Solaris Installer: fixed incorrect netmask for Host-only interface (bug #4590)

- Solaris Installer: added package dependency for Python and Python-devel (bug #4570)

- X11 guests: prevent windows from being skipped in seamless mode KDE guests (bugs #1681 and #3574)

- X11 guests: fixed screen corruption in X11 guests when large amounts of video RAM were allocated (bug #4430)

- X11 guests: some fixes when switching between host and guest-drawn mouse pointers

- X11 guests: fixed an issue which caused seamless mode to stop working as it should (the main issue listed in bug #2238)

## Version 3.0.2 (2009-07-10)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed network regressions (guest hangs during network IO) (bug #4343)

- VMM: guest SMP performance improvements

- VMM: fixed hangs and poor performance with Kaspersky Internet Security (VT-x/AMD-V only; bug #1778)

- VMM: fixed crashes when executing certain Linux guests (software virtualization only; bugs #2696 & #3868)

- ACPI: fixed Windows 2000 kernel hangs with IO-APIC enabled (bug #4348)

- APIC: fixed high idle load for certain Linux guests (3.0 regression)

- BIOS: properly handle Ctrl-Alt-Del in real mode

- iSCSI: fixed configuration parsing (bug #4236)

- OVF: fix potential confusion when exporting networks

- OVF: compatibility fix (bug #4452)

- OVF: accept ovf:/disk/ specifiers with a single slash in addition to ovf://disk/ (bug #4452)

- NAT: fixed crashes under certain circumstances (bug #4330)

- 3D support: fixed dynamic linking on Solaris/OpenSolaris guests (bug #4399)

- 3D support: fixed incorrect context/window tracking for multithreaded apps

- Shared Folders: fixed loading from saved state (bug #1595)

- Shared Folders: host file permissions set to 0400 with Windows guest (bug #4381)

- X11 host and guest clipboard: fixed a number of issues, including bug #4380 and #4344

- X11 Additions: fixed some issues with seamless windows in X11 guests (bug #3727)

- Windows Additions: added VBoxServiceNT for NT4 guests (for time synchronization and guest properties)

- Windows Additions: fixed version lookup

- Linux Installer: support Pardus Linux

- Linux hosts: workaround for buggy graphics drivers showing a black VM window on recent distributions (bug #4335)

- Linux hosts: fixed typo in kernel module startup script (bug #4388)

- Solaris hosts: several installer fixes

- Solaris hosts: fixed a preemption issue causing VMs to never start on Solaris 10 (bug #4328)

- Solaris guests: fixed mouse integration for OpenSolaris 2009.06 (bug #4365)

- Windows hosts: fixed high CPU usage after resuming the host (bug #2978)

- Fixed a settings file conversion bug which sometimes caused hardware acceleration to be enabled for virtual machines that had no explicit configuration in the XML

## Version 3.0.0 (2009-06-30)

This version is a major update. The following major new features were added:

- Guest SMP with up to 32 virtual CPUs (VT-x and AMD-V only; see settings-processor)

- Windows guests: ability to use Direct3D 8/9 applications / games (experimental; see guestadd-3d)

- Support for OpenGL 2.0 for Windows, Linux and Solaris guests

In addition, the following items were fixed and/or added:

- Solaris hosts: allow suspend/resume on the host when a VM is running (bug #3826)

- Solaris hosts: loosen the restriction for contiguous physical memory under certain conditions

- Mac OS X hosts: fixed guest PAE

- Linux hosts: kernel module compile fixes for 2.6.31 (bug #4264)

- VMM: fixed occasional guru meditation when loading a saved state (VT-x only)

- VMM: eliminated IO-APIC overhead with 32 bits guests (VT-x only, some Intel CPUs don't support this feature (most do); bug #638)

- VMM: fixed 64 bits CentOS guest hangs during early boot (AMD-V only; bug #3927)

- VMM: performance improvements for certain PAE guests (e.g. Linux 2.6.29+ kernels)

- VMM: some Windows guests detected a completely wrong CPU frequency (bug #2227)

- VMM: fixed hanging and unkillable VM processes (bug #4040)

- VMM: fixed random infrequent guest crashes due XMM state corruption (Win64 hosts only)

- VMM: performance improvements for network I/O (VT-x/AMD-V only)

- GUI: added mini toolbar for full screen and seamless mode (Thanks to Huihong Luo)

- GUI: redesigned settings dialogs

- GUI: allow to create/remove more than one host-only network adapters (non Windows hosts)

- GUI: display estimated time for long running operations (e.g. OVF import/export)

- GUI: fixed rare hangs when open the OVF import/export wizards (bug #4157)

- 3D support: fixed VM crashes for client applications using incorrect OpenGL states

- 3D support: fixed memory corruption when querying for supported texture compression formats

- 3D support: fixed incorrect rendering of glDrawRangeElements

- 3D support: fixed memory leak when using VBOs

- 3D support: fixed glew library detection

- 3D support: fixed random textures corruption

- VRDP: support Windows 7 RDP client

- Networking: fixed another problem with TX checksum offloading with Linux kernels up to version 2.6.18

- NAT: fixed "open ports on virtual router 10.0.2.2 - 513, 514" (forum)

- NAT: allow to configure socket and internal parameters

- NAT: allow to bind sockets to specific interface

- PXE boot: significant performance increase (VT-x/AMD-V only)

- VHD: properly write empty sectors when cloning of VHD images (bug #4080)

- VHD: fixed crash when discarding snapshots of a VHD image

- VHD: fixed access beyond the block bitmap which could lead to arbitrary crashes

- VBoxManage: fixed incorrect partition table processing when creating VMDK files giving raw partition access (bug #3510)

- VBoxManage: support cloning to existing image file

- OVF: several OVF 1.0 compatibility fixes

- OVF: fixed exporting of disk images when multiple virtual machines are exported at once

- Virtual mouse device: eliminated micro-movements of the virtual mouse which were confusing some applications (bug #3782)

- Shared Folders: sometimes a file was created using the wrong permissions (2.2.0 regression; bug #3785)

- Shared Folders: allow to change file attributes from Linux guests and use the correct file mode when creating files

- Shared Folders: some content was incorrectly written under certain conditions (bug #1187)

- Shared Folders: fixed incorrect file timestamps, when using Windows guest on a Linux host (bug #3404)

- X11 clipboard: fix duplicate end of lines (bug #4270)

- X11 guests: a number of shared clipboard fixes

- Linux guests: Guest Additions support for SUSE Linux Enterprise Desktop 11

- Linux guests: new daemon vboxadd-service to handle time synchronization and guest property lookup

- Linux guests: implemented guest properties (OS info, logged in users, basic network information)

- Windows host installer: VirtualBox Python API can now be installed automatically (requires Python and Win32 Extensions installed)

- USB: Support for high-speed isochronous endpoints has been added. In addition, read-ahead buffering is performed for input endpoints (currently Linux hosts only). This should allow additional devices to work, notably webcams (bug #242)

- USB: fixed error handling for some USB dongles

- Web service: fixed inability to handle NULL pointers for object arguments, which are valid values for a lot of APIs, in both the raw and the object-oriented web service

- Web service: object-oriented bindings for JAX-WS did not exhibit interface inheritance correctly, fixed

- Web service: added support for IDisplay and IGuest interfaces, which were previously unavailable

- Registration dialog uses Sun Online accounts now

## Version 2.2.4 (2009-05-29)

This is a maintenance release. The following items were fixed and/or added:

- Windows Installer: fixed a potential hang during installation

- Windows Installer: fixed several problems (bug #3892)

- Solaris hosts: make it work with Solaris build 114 or later (bug #3981)

- Solaris hosts: fixed a bug serial port character handling found during loopback (bug #3120)

- Linux hosts: adapted vboxdrv.sh to the latest changes in `VBoxManage list runningvms` (bug #4034)

- Windows hosts: fixed a crash caused by host-only/bridged networking

- Mac OS X hosts: fixed access to host DVD with passthrough disabled (bug #4077)

- Guest Additions: fixed problems with KDE 4 not recognizing mouse clicks

- Windows Additions: fixed incorrect 8-bit guest color depth in Windows 7 guests

- GUI: warn if VT-x/AMD-V could not be enabled for guests that require this setting (bug #4055)

- VMM: fixed occasional crash due to insufficient memory

- VMM: fixed hanging 64 bits Solaris guests

- VMM: restore from a saved state occasionally failed (bugs #3984 and #2742)

- Clipboard: fixed a deadlock while shutting down the shared clipboard on X11 hosts (bug #4020)

- OVF: fixed potential hang during import

- OVF: fixed potential crashes during import/export on Win64 hosts

- VBoxManage `modifyhd --compact`: fixed bug which could lead to crashes and image corruption (bug #3864)

- VBoxManage `metrics collect`: now flushes the output stream

- VHD: made `VBoxManage internalcommands sethduuid` work for .vhd files (bug #3443)

- VHD: some .vhd files could not be cloned (bug #4080)

- NAT: improvement of TCP connection establishment (bug #2987)

- NAT: fixed order of DNS servers in DHCP lease (bug #4091)

- NAT: fixed DHCP lease for multiple name servers (bug #3692)

- NAT: fixed a potential segfault if the host lost its connectivity (bug #3964)

- Shared Folders: deny access to parent directories on Windows hosts (bug #4090)

- Shared Folders: make rm/rmdir work with Solaris guests on Windows hosts

- Networking: fixed the problem with blocked receiving thread when a broadcast packet arrives too early to be handled by uninitialized e1000 adapter

- Networking: fixed the problem that caused host freezes/crashes when using bridged mode with host's interface having RX checksum offloading on (bug #3926 and related). Fixes problems with TX offloading as well (bug #3870)

- PXE boot: Added support for PRO/1000 MT Server adapter

- Python bindings: fixed keyword conflict

- SCSI: fixed occasional crashes on Win64

- Serial: allow to redirect the serial port to a raw file (bug #1023)

- VRDP: fixed a rare incorrect screen update

- VMDK: fixed creating snapshots

## Version 2.2.2 (2009-04-27)

This is a maintenance release. The following items were fixed and/or added:

- Host and guest clipboard: fixed a number of issues affecting hosts and guests running the X window system

- Guest Additions: make sure the virtual mouse autodetection works on first reboot after installing the Additions on X.Org server 1.5 and later

- Guest Additions: properly report process identity number of running services

- Guest Additions: clean up properly if the X Window server terminates

- Linux Additions: fixed installation path for OpenGL libraries in some 64-bit guests (bug #3693)

- Solaris Additions: fixed installation to work when X.Org is not installed on the guest

- Solaris Additions: fixed a bug that could panic the guest when unmounting a busy shared folder

- Windows Additions: fixed mouse pointer integration of some Windows guests (2.2.0 regression; bug #3734)

- Windows Additions: fixed installation on Windows Server 2008 Core (bug #2628)

- Main: do not try to use older versions of D-Bus (Linux hosts only, bug #3732)

- VMM: fixed out-of-memory conditions on Windows hosts (bug #3657)

- VMM: fixed occasional hangs when attaching USB devices during VM startup (2.2.0 regression; bugs #3787)

- VMM: fixed guru meditation related to memory management (software virtualization only)

- Virtual disks: fix possible data corruption when writing to diff images, incorrect detection of redundant writes

- GUI: reworked network settings dialog

- GUI: properly show the detailed settings dialog of NAT networks (bug #3702)

- GUI: HostKey could not be changed (2.2.0 regression; bug #3689)

- GUI: fixed memory textfield size (Windows hosts only; bug #3679)

- GUI: fixed crash when selecting a shared folder path (Windows hosts only; bugs #3694, #3751, #3756)

- VBoxManage `modifyhd --compact`: implemented again for VDI files, and now supports relative paths (bug #2180, #2833)

- VBoxManage `snapshot discard`: made it work again (2.1.0 regression; bug #3714)

- NAT: on some Windows hosts, the guest didn't receive a DHCP lease (bug #3655)

- NAT: fixed release assertion during poll() (bug #3667)

- Networking: fixed a deadlock caused by the PCnet network device emulation (2.2.0 regression; bug #3676)

- Clipboard: fixed random crashes (X11 hosts only, bug #3723)

- Shared Folders: fixed incorrect permissions for Solaris guests

- Shared Folders: fixed wrong file sizes with Solaris guests

- CBindings: fixed possible memory leak while releasing the IVirtualBox and ISession Objects

- Solaris hosts: fixed host-only network interface incompatibility with nwam/dhcpagent (bug #3754)

- Windows installer: fixed several install and uninstall issues (bugs #3659, #3686, #1730, #3711, #3373, #3382, #3701, #3685, #3710)

- Mac OS X hosts: preliminary support for Snow Leopard

## Version 2.2.0 (2009-04-08)

This version is a major update. The following major new features were added:

- OVF (Open Virtualization Format) appliance import and export (see ovf)

- Host-only networking mode (see network_hostonly)

- Hypervisor optimizations with significant performance gains for high context switching rates

- Raised the memory limit for VMs on 64-bit hosts to 16GB

- VT-x/AMD-V are enabled by default for newly created virtual machines

- USB (OHCI & EHCI) is enabled by default for newly created virtual machines (Qt GUI only)

- Experimental USB support for OpenSolaris hosts

- Shared Folders for Solaris and OpenSolaris guests

- OpenGL 3D acceleration for Linux and Solaris guests (see guestadd-3d)

- Added C API in addition to C++, Java, Python and Web Services

In addition, the following items were fixed and/or added:

- VMM: FreeBSD guest related fix for V86 flags (bug #2342)

- VMM: fixed guru meditation when booting an AsteriskNow Linux VM (bug #2342)

- VMM: fixed PGMPOOLKIND_FREE guru meditation (bugs #3356, #3431)

- VMM: fixed Windows XP boot hang (guest PAE + nested paging only)

- VMM: allow mixing of VT-x/AMD-V and software virtualization

- VMM: fixed extremely slow safe mode booting in e.g. Windows 2008 (VT-x/AMD-V only)

- VMM: significant speedup of certain GRUB boot loaders (e.g. Solaris) (VT-x/AMD-V only)

- VMM: real-mode IOPL fix for DOS guests (VT-x only)

- VMM: fixed VT-x detection with certain BIOSes that enable VT-x, but don't set the lock bit in MSR_IA32_FEATURE_CONTROL

- VMM: fixed hibernation issues on Windows XP hosts (VT-x only; bug #1794)

- VMM: properly emulate RDMSR from the TSC MSR, should fix some NetBSD guests

- VMM: emulate RDPMC; fixes Windows guests crashes when using the Kaspersky virus scanner (bug #1778)

- NAT: fixed truncated downloads (FTP) (bug #3257)

- NAT: blocked UDP packets caused a crash (bug #3426)

- NAT: allow to configure the next server and the boot file via VBoxManage (bug #2759)

- IDE: fixed hard disk upgrade from XML-1.2 settings (bug #1518)

- Hard disk: support more VMDK file variants (including fixed-size ESX server images)

- Hard disks: refuse to start the VM if a disk image is not writable

- USB: further reduced host CPU utilization for OHCI and EHCI; the "VBoxInternal/Devices/usb-ohci/0/Config/FrameRate" CFG key is no longer necessary and no longer supported

- USB: fixed BSOD on the host with certain USB devices (Windows hosts only; bug #1654)

- E1000: properly handle cable disconnects (bug #3421)

- VRDP: fixed hangs when VRDP server is enabled or disabled in runtime

- Shared Folders: respect umask settings on Linux, Mac OS X and Solaris hosts when creating files

- X11 guests: prevented setting the locale in vboxmouse, as this caused problems with Turkish locales (bug #3563)

- X11 guests: show the guest mouse pointer at the right position if the virtual desktop is larger than the guest resolution (bug #2306)

- Linux Additions: fixed typo when detecting Xorg 1.6 (bug #3555)

- Solaris guests: added xpg4/xcu4 dependency to the Guest Additions installer (bug #3524)

- Windows guests: bind the VBoxMouse.sys filter driver to the correct guest pointing device (bug #1324)

- Windows hosts: fixed BSOD when starting a VM with enabled host interface (bug #3414)

- Linux hosts: do proper reference counting to prevent unloading the vboxnetflt module as long as this code is in use (bug #3104)

- Linux hosts: do not leave zombies of VBoxSysInfo.sh (bug #3586)

- Linux installers: fixes for Slackware, Arch Linux and Linux from Scratch systems

- Windows installers: combined installer executable which contains both (32- and 64-bit) architectures

- VBoxManage: less cryptic command-line error messages

- VBoxManage `list vms` commands now default to compact format

- VBoxManage `controlvm dvdattach` did not work if the image was attached before

- VBoxManage: allow creation of all supported disk image variants

- VBoxManage `showvminfo`: don't spam the release log if the Guest Additions don't support statistics information (bug #3457)

- VBoxManage: big command line processing cleanup, the legacy single-dash options are deprecated and will be removed in the next major release, so switch to the new options now

- Hard disks: improved immutable disk support to auto-reset diff file at VM startup (related to bug #2772)

- GUI: enable the audio adapter by default for new VMs

- GUI: warn if VT-x/AMD-V is not operational when starting a 64-bit guest

- GUI: deactivate 64-bit guest support when the host CPU does not support VT-x/AMD-V

- GUI: removed floppy icon from the status bar

- GUI: show build revision in about dialog

- GUI: fixed sticky status bar text

- GUI: improved error dialogs

- GUI: fail with an appropriate error message when trying to boot a read-only disk image (bug #1745)

- GUI/Mac OS X: fixed disabled close button

- GUI/Windows: re-enabled support for copy and paste (Windows hosts 2.0 regression; bug #2065)

- 3D support: added OpenGL select/feedback support (bug #2920)

- 3D support: close OpenGL subsystem for terminated guest applications (bug #3243)

- 3D support: fixed VM hangs when starting guests with 3D acceleration enabled (bug #3437)

- PXE: fixed boot hangs when hardware virtualization is used (bug #2536)

- LsiLogic: fixed problems with Solaris guests

- Main API: close machine settings XML file when unregistering machine (bug #3548)

## Version 2.1.4 (2009-02-16)

This is a maintenance release. The following items were fixed and/or added:

- Windows hosts: fixed host crashes/hangs on certain 32 bits Windows systems when running Linux guests (bugs #1606, #2269, #2763)

- Windows hosts: fixed network component BSOD issue (bugs #3168, #2916)

- Windows hosts: fixed installation issues (bugs #2517, #1730, #3130)

- Linux hosts: fixed occasional kernel oopses (bug #2556)

- Linux hosts: fixed module dependency for shipped modules (bug #3115)

- Linux hosts: moved the udev rules for USB forward so that they don't override existing system rules (bug #3143)

- Linux hosts: fixed the issue with guest not being able to communicate with each other when attached via TAP interfaces (bug #3215)

- Linux hosts: give up probing for USB gracefully if DBus or hal are not available (bug #3136)

- Linux hosts: fixed warnings in installer when SELinux was disabled (bug #3098)

- Linux hosts: VirtualBox sometimes failed to start if it had been started using sudo previously (bug #3270)

- Solaris hosts: fixed high CPU load while running many guests in parallel

- Solaris hosts: fixed inability to start more than 128 VMs

- VMM: fixed performance regression for Windows guests (bug #3172)

- VMM: ignore CPU stepping when restoring a saved state/snapshot

- REM: fixed inability to use gdb to debug programs in Linux guests with software virtualization (bug #3245)

- GUI: fixed dead key handling on Solaris hosts (bug #3256)

- GUI: in the shutdown dialog, disable the action send the shutdown signal if the guest is currently not using ACPI

- GUI: suppress additional key release events sent by X11 hosts when keys are auto-repeated (bug #1296)

- API: restore case insensitive OS type name lookup (bug #3087)

- VBoxHeadless: really don't start X11 services (clipboard service, 3D acceleration; Solaris & Darwin hosts only; bug #3199)

- NAT: fixed occasional crashes when the guest is doing traceroute (non-Windows hosts; bug #3200)

- NAT: fixed crashes under high load (bug #3110)

- NAT: fixed truncated downloads (Windows hosts only, bug #3257)

- NAT: don't intercept TFTP packages with a destination address different from the builtin TFTP server (bug #3112)

- USB: several fixes for USB passthrough on Linux hosts

- USB: reduced host CPU utilization if EHCI is active

- VRDP: fixed VRDP server black screen after a client reconnect (bug #1989)

- VRDP: modified rdesktop client (rdesktop-vrdp) now uses NumLock state synchronization (bug #3253)

- LsiLogic: make FreeBSD guests work (bug #3174)

- ATA: fixed deadlock when pausing VM due to problems with the virtual disk (e.g. disk full, iSCSI target unavailable)

- iSCSI: fixed possible crash when pausing the VM

- 3D support: added missing GL_MAX_TEXTURE_COORDS_ARB (bug #3246)

- Windows Additions: fixed ERROR (e0000101) error during installation (bug #1923)

- Windows Additions: fixed Windows Explorer hang when browsing shared folders with 64 bit guests (bug #2225)

- Windows Additions: fixed guest screen distortions during a video mode change

- Windows Additions: fixed the Network drive not connected message for mapped shared folders drives after the guest startup (bug #3157)

- Linux Additions: fixed occasional file corruption when writing files in O_APPEND mode to a shared folder (bug #2844)

- Linux Additions: the mouse driver was not properly set up on X.Org release candidates (bug #3212)

- Linux Additions: fixed installer to work with openSUSE 11.1 (bug #3213)

- Linux Additions: disable dynamic resizing if the X server is configured for fixed resolutions

- Linux/Solaris Additions: handle virtual resolutions properly which are larger than the actual guest resolution (bug #3096)

## Version 2.1.2 (2009-01-21)

This is a maintenance release. The following items were fixed and/or added:

- USB: Linux host support fixes (bug #3136)

- VMM: fixed guru meditation for PAE guests on non-PAE hosts (AMD-V)

- VMM: fixed guru meditation on Mac OS X hosts when using VT-x

- VMM: allow running up to 1023 VMs on 64-bit hosts (used to be 127)

- VMM: several FreeBSD guest related fixes (bugs #2342, #2341, #2761)

- VMM: fixed guru meditation when installing Suse Enterprise Server 10U2 (VT-x only; bug #3039)

- VMM: fixed guru meditation when booting Novell NetWare 4.11 (VT-x only; bug #2898)

- VMM: fixed VERR_ADDRESS_TOO_BIG error on some Mac OS X systems when starting a VM

- VMM: clear MSR_K6_EFER_SVME after probing for AMD-V (bug #3058)

- VMM: fixed guru meditation during Windows 7 boot with more than 2 GB guest RAM (VT-x, nested paging only)

- VMM: fixed hang during OS/2 MCP2 boot (AMD-V and VT-x only)

- VMM: fixed loop during OpenBSD 4.0 boot (VT-x only)

- VMM: fixed random crashes related to FPU/XMM with 64 bits guests on 32 bits hosts

- VMM: fixed occasional XMM state corruption with 64 bits guests

- GUI: raised the RAM limit for new VMs to 75% of the host memory

- GUI: added Windows 7 as operating system type

- VBoxSDL: fixed `-fixed fixedmode` parameter (bug #3067)

- Clipboard: stability fixes (Linux and Solaris hosts only, bug #2675 and #3003)

- 3D support: fixed VM crashes for certain guest applications (bugs #2781, #2797, #2972, #3089)

- LsiLogic: improved support for Windows guests (still experimental)

- VGA: fixed a 2.1.0 regression where guest screen resize events were not properly handled (bug #2783)

- VGA: significant performance improvements when using VT-x/AMD-V on Mac OS X hosts

- VGA: better handling for VRAM offset changes (fixes GRUB2 and Dos DOOM display issues)

- VGA: custom VESA modes with invalid widths are now rounded up to correct ones (bug #2895)

- IDE: fixed ATAPI passthrough support (Linux hosts only; bug #2795)

- Networking: fixed kernel panics due to NULL pointer dereference in Linux kernels < 2.6.20 (Linux hosts only; bug #2827)

- Networking: fixed intermittent BSODs when using the new host interface (Windows hosts only; bugs #2832, #2937, #2929)

- Networking: fixed several issues with displaying hostif NICs in the GUI (Windows hosts only; bugs 2814, #2842)

- Networking: fixed the issue with displaying hostif NICs without assigned IP addresses (Linux hosts only; bug #2780)

- Networking: fixed the issue with sent packets coming back to internal network when using hostif (Linux hosts only; bug #3056).

- NAT: fixed port forwarding (Windows hosts only; bug #2808)

- NAT: fixed booting from the builtin TFTP server (bug #1959)

- NAT: fixed occasional crashes (bug #2709)

- SATA: vendor product data (VPD) is now configurable

- SATA: raw disk partitions were not recognized (2.1.0 regression; Windows host only, bug #2778)

- SATA: fixed timeouts in the guest when using raw VMDK files (Linux host only, bug #2796)

- SATA: huge speed up during certain I/O operations like formatting a drive

- SATA/IDE: fixed possible crash/errors during VM shutdown

- VRDP: fixed loading of `libpam.so.1` from the host (Solaris hosts only)

- VRDP: fixed RDP client disconnects

- VRDP: fixed VRDP server misbehavior after a broken client connection

- VBoxManage `showvminfo`: fixed assertion for running VMs (bug #2773)

- VBoxManage `convertfromraw`: added parameter checking and made it default to creating VDI files; fixed and documented format parameter (bug #2776)

- VBoxManage `clonehd`: fixed garbled output image when creating VDI files (bug #2813)

- VBoxManage `guestproperty`: fixed property enumeration (incorrect parameters/exception)

- VHD: fixed error when attaching certain container files (bug #2768)

- Solaris hosts: added support for serial ports (bug #1849)

- Solaris hosts: fix for Japanese keyboards (bug #2847)

- Solaris hosts: 32-bit and 64-bit versions now available as a single, unified package

- Linux hosts: don't depend on `libcap1` anymore (bug #2859)

- Linux hosts: kernel module compile fixes for 2.6.29-rc1

- Linux hosts: don't drop any capability if the VM was started by root (2.1.0 regression)

- Mac OS X hosts: save the state of running or paused VMs when the host machine's battery reaches critical level

- Mac OS X hosts: improved window resizing of the VM window

- Mac OS X hosts: added GUI option to disable the dock icon realtime preview in the GUI to decrease the host CPU load when the guest is doing 3D

- Mac OS X hosts: polished realtime preview dock icon

- Windows Additions: fixed guest property and logging OS type detection for Windows 2008 and Windows 7 Beta

- Windows Additions: added support for Windows 7 Beta (bugs #2995, #3015)

- Windows Additions: fixed Windows 2000 guest freeze when accessing files on shared folders (bug #2764)

- Windows Additions: fixed CTRL-ALT-DEL handling when using VBoxGINA

- Windows Additions Installer: added /extract switch to only extract (not install) the files to a directory (can be specified with /D=path)

- Linux installer and Additions: added support for the Linux From Scratch distribution (bug #1587) and recent Gentoo versions (bug #2938)

- Additions: added experimental support for X.Org Server 1.6 RC on Linux guests

- Linux Additions: fixed bug which prevented to properly set `fmode` on mapped shared folders (bug #1776)

- Linux Additions: fixed appending of files on shared folders (bug #1612)

- Linux Additions: ignore `noauto` option when mounting a shared folder (bug #2498)

- Linux Additions: fixed a driver issue preventing X11 from compiling keymaps (bug #2793 and #2905)

- X11 Additions: workaround in the mouse driver for a server crash when the driver is loaded manually (bug #2397)

## Version 2.1.0 (2008-12-17)

This version is a major update. The following major new features were added:

- Support for hardware virtualization (VT-x and AMD-V) on Mac OS X hosts

- Support for 64-bit guests on 32-bit host operating systems (experimental; see intro-64bitguests)

- Added support for Intel Nehalem virtualization enhancements (EPT and VPID; see hwvirt)

- Experimental 3D acceleration via OpenGL (see guestadd-3d)

- Experimental LsiLogic and BusLogic SCSI controllers (see harddiskcontrollers)

- Full VMDK/VHD support including snapshots (see vdidetails)

- New NAT engine with significantly better performance, reliability and ICMP echo (ping) support (bugs #1046, #2438, #2223, #1247)

- New Host Interface Networking implementations for Windows and Linux hosts with easier setup (replaces TUN/TAP on Linux and manual bridging on Windows)

In addition, the following items were fixed and/or added:

- VMM: significant performance improvements for VT-x (real mode execution)

- VMM: support for hardware breakpoints (VT-x and AMD-V only; bug #477)

- VMM: VGA performance improvements for VT-x and AMD-V

- VMM: Solaris and OpenSolaris guest performance improvements for AMD-V (Barcelona family CPUs only)

- VMM: fixed guru meditation while running the Dr. Web virus scanner (software virtualization only; bug #1439)

- VMM: deactivate VT-x and AMD-V when the host machine goes into suspend mode; reactivate when the host machine resumes (Windows, Mac OS X & Linux hosts; bug #1660)

- VMM: fixed guest hangs when restoring VT-x or AMD-V saved states/snapshots

- VMM: fixed guru meditation when executing a one byte debug instruction (VT-x only; bug #2617)

- VMM: fixed guru meditation for PAE guests on non-PAE hosts (VT-x)

- VMM: disallow mixing of software and hardware virtualization execution in general (bug #2404)

- VMM: fixed black screen when booting OS/2 1.x (AMD-V only)

- GUI: pause running VMs when the host machine goes into suspend mode (Windows & Mac OS X hosts)

- GUI: resume previously paused VMs when the host machine resumes after suspend (Windows & Mac OS X hosts)

- GUI: save the state of running or paused VMs when the host machine's battery reaches critical level (Windows hosts)

- GUI: properly restore the position of the selector window when running on the compiz window manager

- GUI: properly restore the VM in seamless mode (2.0 regression)

- GUI: warn user about non optimal memory settings

- GUI: structure operating system list according to family and version for improved usability

- GUI: predefined settings for QNX guests

- IDE: improved ATAPI passthrough support

- Networking: added support for up to 8 Ethernet adapters per VM

- Networking: fixed issue where a VM could lose connectivity after a reboot

- iSCSI: allow snapshot/diff creation using local VDI file

- iSCSI: improved interoperability with iSCSI targets

- Graphics: fixed handling of a guest video memory which is not a power of two (bug #2724)

- VBoxManage: fixed bug which prevented setting up the serial port for direct device access

- VBoxManage: added support for VMDK and VHD image creation

- VBoxManage: added support for image conversion (VDI/VMDK/VHD/RAW)

- Solaris hosts: added IPv6 support between host and guest when using host interface networking

- Mac OS X hosts: added ACPI host power status reporting

- API: redesigned storage model with better generalization

- API: allow attaching a hard disk to more than one VM at a time

- API: added methods to return network configuration information of the host system

- Shared Folders: performance and stability fixes for Windows guests (Microsoft Office Applications)

## Version 2.0.8 (2009-03-10)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed guest hangs when restoring VT-x or AMD-V saved states/snapshots

- VMM: fixed memory allocation issues which can cause VM start failures with VERR_PGM_MAPPING_CONFLICT error

- VMM: fixed host crashes/hangs on certain 32 bits Windows systems when running Linux guests (bugs #1606, #2269, #2763)

- XPCOM/Main: fixed synchronization bug caused by SYSV semaphore key collisions

- ATA: fixed deadlock when pausing VM due to problems with the virtual disk (e.g. disk full, iSCSI target unavailable)

- iSCSI: fixed possible crash when pausing the VM

- iSCSI: fix PDU validity checking and detect final PDU reliably

- VBoxHeadless: really don't start X11 services (clipboard service, 3D acceleration; Solaris & Darwin hosts only; bug #3199)

- Networking: fixed issue where a VM could lose connectivity after a reboot

- Linux hosts: fixed occasional kernel oopses (bug #2556)

- Solaris hosts: fixed high CPU load while running many guests in parallel

- Solaris hosts: fixed inability to start more than 128 VMs

- Solaris/Web services: fixed SMF script to set home directory correctly

- Linux Additions: fixed occasional file corruption when writing files in O_APPEND mode to a shared folder (bug #2844)

## Version 2.0.6 (2008-11-21)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed Guru meditation when running 64 bits Windows guests (bug #2220)

- VMM: fixed Solaris 10U6 boot hangs (VT-x and AMD-V) bug #2565)

- VMM: fixed Solaris 10U6 reboot hangs (AMD-V only; bug #2565)

- GUI: the host key was sometimes not properly displayed (Windows hosts only, bug #1996)

- GUI: the keyboard focus was lost after minimizing and restoring the VM window via the Windows taskbar (bugs #784)

- VBoxManage: properly show SATA disks when showing the VM information (bug #2624)

- SATA: fixed access if the buffer size is not sector-aligned (bug #2024)

- SATA: improved performance

- SATA: fixed snapshot function with ports>1 (bug #2510)

- E1000: fixed crash under rare circumstances

- USB: fixed support for iPhone and Nokia devices (Linux host: bugs #470 & #491)

- Windows host installer: added proper handling of open VirtualBox applications when updating the installation

- Windows host installer: fixed default installation directory on 64-bit on new installations (bug #2501)

- Linux/Solaris/Darwin hosts: verify permissions in `/tmp/vbox-$USER-ipc`

- Linux hosts: fixed assertion on high network load (AMD64 hosts, fix for Linux distributions with glibc 2.6 and newer (bug #616)

- Linux hosts: don't crash during shutdown with serial ports connected to a host device

- Solaris hosts: fixed incompatibility between IPSEC and host interface networking

- Solaris hosts: fixed a rare race condition while powering off VMs with host interface networking

- Solaris hosts: fixed VBoxSDL on Solaris 10 by shipping the required SDL library (bug #2475)

- Windows Additions: fixed logged in users reporting via guest properties when using native RDP connections

- Windows Additions: fixed Vista crashes when accessing shared folders under certain circumstances (bug #2461)

- Windows Additions: fixed shared folders access with MS-Office (bug #2591)

- Linux Additions: fixed compilation of vboxvfs.ko for 64-bit guests (bug #2550)

- SDK: added JAX-WS port caching to speedup connections

## Version 2.0.4 (2008-10-24)

This is a maintenance release. The following items were fixed and/or added:

- VMM: better error reporting for VT-x failures

- VMM: don't overflow the release log with PATM messages (bug #1775)

- VMM: fixed save state restore in real mode (software virtualization only)

- GUI: work around a Qt bug on Mac OS X (bug #2321)

- GUI: properly install the Qt4 accessible plugin (bug #629)

- SATA: error message when starting a VM with a VMDK connected to a SATA port (bug #2182)

- SATA: fixed Guru mediation when booting OpenSolaris/64; most likely applies to other guests as well (bug #2292)

- Network: don't crash when changing the adapter link state if no host driver is attached (bug #2333)

- VHD: fixed bug which prevents booting from VHD images bigger than 4GB (bug #2085)

- VRDP: fixed a repaint problem when the guest resolution was not equal to the client resolution

- Clipboard: don't crash when host service initialization takes longer than expected (Linux hosts only; bug #2001)

- Windows hosts: VBoxSVC.exe crash (bug #2212)

- Windows hosts: VBoxSVC.exe memory leak due to a Windows WMI memory leak (Vista only) (bug #2242)

- Windows hosts: VBoxSVC.exe delays GUI startup

- Linux hosts: handle jiffies counter overflow (VM stuck after 300 seconds of host uptime; bug #2247)

- Solaris hosts: fixed host or guest side networking going stale while using host interface networking (bug #2474)

- Solaris hosts: added support for using unplumbed network interfaces and Crossbow Virtual Network Interfaces (VNICs) with host interface networking

- Solaris hosts: reworked threading model improves performance for host interface networking

- Windows Additions: fixed crash when accessing deep directory structures in a shared folder

- Windows Additions: improved shared folder name resolving (bug #1728)

- Windows Additions: fixed Windows 2000 shutdown crash (bug #2254)

- Windows Additions: fixed error code for `MoveFile()` if the target exists (bug #2350)

- Linux Additions: fixed `seek()` for files bigger than 2GB (bug #2379)

- Linux Additions: support Ubuntu 8.10

- Linux Additions: clipboard fixes (bug #2015)

- Web services: improved documentation and fixed example (bug #1642)

## Version 2.0.2 (2008-09-12)

This is a maintenance release. The following items were fixed and/or added:

- VMM: fixed inability to run more than one VM in parallel (AMD-V on CPUs with erratum 170 only; bug #2167)

- VMM: VT-x stability fixes (bug #2179 and others)

- VMM: fixed Linux 2.6.26+ kernel crashes (used by Ubuntu 8.10 Alpha, Fedora 10 Alpha; bug #1875)

- VMM: fixed 64 bits Linux 2.6.26 kernel crashes (Debian)

- VMM: fixed Vista (32 bits) guest crash during boot when PAE and NX are enabled (applied to 64 bits hosts with VT-x enabled only)

- VMM: fixed OS/2 guest crashes during boot (AMD-V; bug #2132)

- GUI: fixed crash when trying to release an inaccessible image in the virtual disk manager

- GUI: fixed invalid error message for a changed snapshot path even if that path wasn't changed (bug #2064)

- GUI: fixed crash when creating a new hard disk image (bug #2060)

- GUI: fixed crash when adding a hard disk in the VM settings (bug #2081)

- GUI: fixed a bug where VirtualBox isn't working with the new QGtkStyle plugin (bug #2066)

- GUI: fixed VM close dialog in seamless mode (Mac OS X hosts only; bug #2067)

- GUI: fixed standard menu entries for NLS versions (Mac OS X hosts only)

- GUI: disable the VT-x/AMD-V setting when it's not supported by the CPU (or on Mac OS X hosts)

- VBoxManage: fixed crash during `internalcommands createrawvmdk` (bug #2184)

- VBoxManage: fixed output of `snapshot showvminfo` (bug #698)

- Guest properties: added information about guest network interfaces (Windows guests only)

- Shared Folders: fixed regression that caused Windows guest crashes

- API: fixed number of installed CPUs (Solaris hosts only)

- VRDP: allow a client to reconnect to an existing session on the VRDP server by dropping the existing connection (configurable and disabled by default; only relevant when multiconnection mode is disabled)

- VRDP: fixed an image repaint problem

- Linux hosts: fixed bug in vboxdrv.ko that could corrupt kernel memory and panic the kernel (bug #2078)

- Linux hosts: compile fixes for kernel module on Linux 2.6.27

- Mac OS X hosts: added Python support

- Additions: fixed a possible hang in HGCM communication after a VM reboot

- Windows Additions: added support for Windows XP 64 bits (bug #2117)

- Linux Additions: deactivate dynamic resizing on Linux guests with buggy X servers

- Linux Additions: support Ubuntu 8.10 guests and Fedora 9 guests (dynamic resizing disabled for the latter)

- Linux Additions: added installer check for the system architecture

- Linux Additions: fixed Xorg modules path for some Linux distributions (bug #2128)

- VMDK: be more liberal with ambiguous parts of the format specification and accept more format variants (bug #2062)

- VHD: fixed a bug in the VHD backend which resulted in reading the wrong data (bug #2085)

- Solaris hosts: fixed kernel panic on certain machines when starting VMs with host interface networking (bug #2183)

- Solaris hosts: fixed inability to access NFS shares on the host when host interface networking was enabled

- Solaris hosts: installer now detects and reports when installing under the wrong architecture

- Solaris hosts: fixed security hardening that prevented starting VMs from non-global zones even as root (bug #1948)

- Solaris Additions: combined the 32 bit and 64 bit Additions installer into a single package

- Mac OS X hosts: experimental support for attaching a real serial port to the guest

## Version 2.0.0 (2008-09-04)

This version is a major update. The following major new features were added:

- 64 bits guest support (64 bits host only)

- New native Leopard user interface on Mac OS X hosts

- The GUI was converted from Qt3 to Qt4 with many visual improvements

- New-version notifier

- Guest property information interface

- Host Interface Networking on Mac OS X hosts

- New Host Interface Networking on Solaris hosts

- Support for Nested Paging on modern AMD CPUs (major performance gain)

- Framework for collecting performance and resource usage data (metrics)

- Added SATA asynchronous IO (NCQ: Native Command Queuing) when accessing raw disks/partitions (major performance gain)

- Clipboard integration for OS/2 Guests

- Created separate SDK component featuring a new Python programming interface on Linux and Solaris hosts

- Support for VHD disk images

In addition, the following items were fixed and/or added:

- VMM: VT-x fixes

- AHCI: improved performance

- GUI: keyboard fixes

- Linux installer: properly uninstall the package even if unregistering the DKMS module fails

- Linux Additions: the guest screen resolution is properly restored

- Network: added support for jumbo frames (> 1536 bytes)

- Shared Folders: fixed guest crash with Windows Media Player 11

- Mac OS X: Ctrl+Left mouse click doesn't simulate a right mouse click in the guest anymore. Use Hostkey+Left for a right mouse click emulation. (bug #1766)