- AMD-V, VT-x: stability fixes
- Shared Folders: fixed host crash (Solaris host only, bugs #1336, #1646)
- Shared Folders: fixed BSOD when debugging with Visual Studio (bug #1627)
- Shared Folders: fixed BSOD when compiling on a shared folder (bug #1683)
- Shared Folders: several fixes/stability improvements
- SATA: fixed a race that could cause an occasional Windows guest system hang
- SATA: fixed spurious BIOS log messages
- Networking: fixed NIC tracing with NAT interfaces (bug #1790)
- USB: fixed crash under certain conditions when unplugging a USB device (bug #1295)
- Settings: fixed bug when converting 1.5.x settings
- RDP: fixed enabling the RDP server during runtime
- RDP: properly detect the rdesktop 1.6.0 RDP client
- RDP: fixed RDP crash (bug #1521)
- RDP: updated modified rdesktop client to version 1.6.0
- GUI: NLS improvements
- BIOS: added SMBIOS header to make Solaris and Vista recognize the DMI data
- ACPI: properly hide a disabled floppy controller
- VMM: small fixes to protected mode without paging
- VMDK: fixed handling of .vmdk images without UUIDs
- Windows hosts: fixed driver parameter validation issue in VBoxDrv.sys that could allow an attacker on the host to crash the system
- Windows hosts: installer now contains web service examples mentioned in the manual
- Linux hosts: properly deregister the Linux kernel module before uninstalling a Linux deb/rpm package
- Linux hosts: kernel module works now with Linux 2.6.27
- Linux hosts: fixed a typo in the vboxnet setup script for host network interfaces (bug #1714)
- Linux hosts: fixed usage of tar in installer (bug #1767)
- Linux hosts: fixed long guest shutdown time when serial port is enabled
- Solaris hosts: refuse to install in Sun xVM hypervisor dom0
- Solaris hosts: accept Solaris raw disks when for raw disk access
- Windows additions: made installation of shared folders more robust
- Windows additions: improved installation
- Linux additions: accept every user-defined guest video mode in /etc/X11/xorg.conf
- Linux additions: fixed startup order for recent Linux distributions (e.g. openSUSE 11)

http://www.virtualbox.org/wiki/Downloads
Setup: https://cds.sun.com/is-bin/INTERSHOP.enfinity/WFS/CDS-CDS_SMI-Site/en_US/-/USD/ViewProductDetail-Start?ProductRef=innotek-1.6-G-F@CDS-CDS_SMI
Manual: http://www.virtualbox.org/download/1.6.2/UserManual.pdf

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