- fixed compatibility with some applications (eg. Starburn), on new builds of Windows Vista and Windows 7.

Windows Installer: fixed a potential hang during installation
Windows Installer: fixed several problems

Solaris hosts: make it work with Solaris build 114 or later
Solaris hosts: fixed a bug serial port character handling found during loopback

Linux hosts: adapted vboxdrv.sh to the latest changes in VBoxManage list runningvms
Windows hosts: fixed a crash caused by host-only/bridged networking

Mac OS X hosts: fixed access to host DVD with passthrough disabled

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

VMM: fixed occassional crash due to insuffient memory
VMM: fixed hanging 64 bits Solaris guests
VMM: restore from a saved state occassionally failed (bugs #3984 and #2742)

Clipboard: fixed a deadlock while shutting down the shared clipboard on X11 hosts

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
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)
VMDK: fixed creating snapshots

NAT: improvement of TCP connection establisment (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

- Added support for Google Chrome recently closed tabs.
- Disabled removal of most recent System restore point.
- Fixed bug with Internet Explorer 8 Compatibility View settings.
- Improved uninstaller support for Windows 7.
- Enhanced right-click menu options for Cleaner screen tree.
- Added extra information under title for Options and Tools screens.
- Added right-click menu to Registry screen tree.
- Added support to multi-select items in Include, Exclude and System Restore screens.
- Added language support for Estonian and Farsi.
- Internal 64-bit improvements.
- Minor bug fixes.

FIX: key shift+tab did not work in Wyse emulations
FIX: keyboard mapping was broken with NumLock on (Windows only)
NEW: REXX subcommand “COMPUTERNAME” for ZocGetInfo()
FIX: subtypes for Wyse/TVI emulation could not be set (Mac OS X only)
FIX: crashed when pressing a key (letter, etc.) in scrollback
FIX: multi-file zmodem upload sent wrong total size

- Hotfix: fixed crash when seeking in files that can’t be decoded completely.
- Hotfix: corrected weird behaviors after restart with playback paused and “resume playback after restart” active.
- Updated third-party component blacklist.

- Improvements to Wizard browse dialog.
- Complete rewrite of PDF and RTF deep scan detection methods.
- Fixed display bug for status icons in low-color.
- Scan speed optimizations.
- Various UI tweaks.

- Delay between right clicking selected files in Windows Explorer and displaying the context menu is reduced. This delay can be noticeable, when you right click several thousands of files.
- dragging a file over an existing archive in Windows Explorer did not work for 64 bit WinRAR;
- 64 bit beta 1 shell extension crashed if user right clicked “Startup” folder in Start Menu and selected “Open” or “Explore” commands;
- “Scan archive for viruses” command in 64 bit beta 1 could fail to autodetect some of 32 bit antiviruses detected by 32 bit version;
- beta 1 hung when the entire folder specified as a mask was excluded: ‘rar a -xfolder arc folder’;
- sometimes beta 1 could hang when creating a new RAR archive if archive comment or one of advanced NTFS options was specified;
- ZIP encryption code was updated to include recent InfoZip fixes;
- 64 bit version did not store the toolbar layout.