= Changelog =

'''!VirtualBox 2.2.0''' (released 2009-08-04)[[BR]][[BR]]
This version is a major update. The following major new features were added:
 * OVF (Open Virtualization Format) appliance import and export (see chapter 3.8, Importing and exporting virtual machines, [http://download.virtualbox.org/virtualbox/2.2.0/UserManual.pdf User Manual] page 55)
 * Host-only networking mode (see chapter 6.7, Host-only networking, [http://download.virtualbox.org/virtualbox/2.2.0/UserManual.pdf User Manual] page 88)
 * 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 chapter 4.8, Hardware 3D acceleration (OpenGL), [http://download.virtualbox.org/virtualbox/2.2.0/UserManual.pdf User Manual] page 70)
 * 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, OSX 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 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)

For the changelog of previous !VirtualBox series, have a look at
 * [wiki:Changelog-2.1 VirtualBox 2.1]
 * [wiki:Changelog-2.0 VirtualBox 2.0]
 * [wiki:Changelog-1.6 VirtualBox 1.6]