http://www.virtualbox.org/wiki/Changelog
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 #172
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)
