This is a maintenance release. The following items were fixed and/or added:

VMM: Fixed Guru meditation when running 64 bits Windows guests (bug #2220)
VMM: Fixed Solaris 10U6 boot hangs (VT-x and AMD-V) bug #2565)
VMM: Fixed Solaris 10U6 reboot hangs (AMD-V only; bug #2565)
GUI: the host key was sometimes not properly displayed (Windows hosts only, bug #1996)
GUI: the keyboard focus was lost after minimizing and restoring the VM window via the Windows taskbar (bugs #784)
VBoxManage: properly show SATA disks when showing the VM information (bug #2624)
SATA: Fixed access if the buffer size is not sector-aligned (bug #2024)
SATA: improved performance
SATA: Fixed snapshot function with ports>1 (bug #2510)
E1000: Fixed crash under rare circumstances
USB: Fixed support for iPhone and Nokia devices (Linux host: bugs #470 & #491)
Windows host installer: added proper handling of open VirtualBox applications when updating the installation
Windows host installer: Fixed default installation directory on 64-bit on new installations (bug #2501)
Linux/Solaris/Darwin hosts: verify permissions in /tmp/vbox-$USER-ipc
Linux hosts: Fixed assertion on high network load (AMD64 hosts, Fix for Linux distributions with glibc 2.6 and newer (bug #616)
Linux hosts: don’t crash during shutdown with serial ports connected to a host device
Solaris hosts: Fixed incompatibility between IPSEC and host interface networking
Solaris hosts: Fixed a rare race condition while powering off VMs with host interface networking
Solaris hosts: Fixed VBoxSDL on Solaris 10 by shipping the required SDL library (bug #2475)
Windows additions: Fixed logged in users reporting via guest properties when using native RDP connections
Windows additions: Fixed Vista crashes when accessing shared folders under certain circumstances (bug #2461)
Windows additions: Fixed shared folders access with MS-OfFice (bug #2591)
Linux additions: Fixed compilation of vboxvfs.ko for 64-bit guests (bug #2550)
SDK: added JAX-WS port caching to speedup connections