- Added support for administratively prohibiting checking for updates from within SecureCRT.
- SecureCRT could crash if a session showing elapsed time was connected and the Windows system date or time was set to a value in the past.
- If a session that required a password was cloned, the password had to be entered again.
- When the session option “Use Windows copy and paste hotkeys” was set, the hotkeys for Find and Select All did not work.
- If the path in the “Select File to Send as ASCII” dialog was changed, it was not remembered the next time that dialog was displayed. It is now remembered until SecureCRT exits.
- The installer did not honor LICENSE_FILE or CONFIG_FOLDER_PATH entries that were specified in an ANSWERFILE.
- Silent installs did not add the program to the Start menu or the list of installed programs in the Windows Control Panel.
- Telnet: If a logon script that did not send an initial carriage return was specified for a session, a carriage return (OxOD) was sent in a separate packet during authentication, which caused authentication to fail if the server used line mode.
- SSH2: Previously, the default GEX preferred key size was changed from 2046 to 2048. However, the GSSAPI GEX maximum key size was still 2046, which caused the server to report an error and disconnect the session when GSSAPI GEX was used.

- Added native 64-bit support.
- Added support for exFAT drives.
- Improved Windows 7 support.
- Fixed browse issue with the Wizard in Win98.
- Fixed a few other Win98 issues.
- Minor UI tweaks.

Guest SMP with up to 32 virtual CPUs (VT-x and AMD-V only; see chapter 3.7.2.2 of the user manual)
Windows guests: ability to use Direct3D 8/9 applications / games
Support for OpenGL 2.0 for Windows, Linux and Solaris guests

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 to XMM state corruption (Win64 hosts only)
VMM: performance improvements for network I/O (VT-x/AMD-V only)
GUI: added mini toolbar for fullscreen 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

- QNX emulation now allows to output with non-IBM/DOS codepages
- redrawing quirk in local typing bar with colorful tabs
- Linux and Xterm did not accept Meta key combination Alt+?
- editing of multiple host directory entries was broken
- sometimes showed internal error about fBitmapContext (OS X Snow Leopard only)
- spurious SSH error mesage (shutdown failed)
- eating system resources when running in Windows locked desktop (Windows only)
- some memory lost when changing number of max lines in scrollback
- crash when scolling past the bottom with Find dialog open
- better error message for telnet socket creation errors
- screen contents sometimes lost when vt swtiches between 80 and 132 columns
- last entry for the recent script files in REXX menu was ignored
- change to terminal-features-query (ESC-Z) for VT100
- problem remapping Enter, Return, Ctrl+Enter, Tab, Ctrl+Tab (Windows only)
- keep-alive for telnet (global telnet options)
- entry ‘move to’ was sometimes missing from popup menu in host directory
- key ’5′ on numeric keypad did not work (OS X only)
- fingerprints for SSH2 connections (you may get prompted for host keys again)
- could not do SSH login from host dir if device was “(same as session profile)”
- new host directory entries were not created in the current folder
- graphical quirk in the local typing bar with colorful tabs (Windows only)

- New ‘Shutdown’ variable in ‘Software\WinRAR\Policy’ registry key allows to disable “Turn PC off when done” option for security reasons. Read “Configuration settings/Registry variables” for more details.

- Program Compatibility Assistant in Windows 7 will not display an erroneous “This program might not have installed correctly” message after closing RAR SFX archives created by this beta.

- Improved compatibility with high DPI Windows display mode.

- Bugs fixed:
a) beta 3 did not display archiving commands in context menu if user selected several archives;
b) beta 3 did not handle ‘LongLink’ records in TAR archives correctly;
c) recovery record based repair did not work correctly in previous beta versions;
d) beta 3 could display a folder icon for archived files without a file extension.

- Added U3 smart drive support. (Separate installer)
- Added support for: Adobe Reader 9.0, Adobe Photoshop CS3, Adobe Photoshop CS4, Adobe llustrator CS4, Nero Burning ROM 9, OpenOffice 3.1, AVG AntiVirus 8.0, AntiVir Desktop and Vuze.
- Added Installed date and size to Uninstall Tool.
- Added support for multiple item selection on Start up tool.
- Added support for cleaning Windows 2008 IIS log files.
- Improved Windows 7 support.
- Improved 64-bit Registry cleaning accuracy.
- Improved loading of System Restore Tool.
- Improved various routines in the uninstaller code.
- Fixed Windows 7 Task Scheduler bug.
- Fixed “No Disk” bug when using Wipe Free Space.
- Fixed Win98 support.
- Minor text and translation improvements.
- Minor bug fixes.

Bugfix: In some cases the root folder in TreeSize was not expandable.