This is a maintenance release. The following items were fixed and/or added:
GUI: fixed a bug which prevented to add more than one SATA drive from the GUI
GUI: fixed a regression introduced in 1.6.0: the fullscreen mode was left on every guest video mode switch
GUI: fixed several minor issues
Networking: fixed a host interface networking regression introduced in 1.6.0
VMM: fixed starting of VMs with AMD-V enabled
VMM: massive performance enhancements for AMD-V
VMM: stability improvements for AMD-V on Windows hosts
VMM: correctly detect AMD CPUs with erratum 170 (AMD-V)
VMM: detect inconsistent timestamp counters on certain AMD Phenom motherboards (Windows host only)
VMM: fixed KVM check (Linux hosts only)
VMM: fixed a regression introduced in 1.6.0: Windows stuck during installation
XPCOM: fixed several races
SATA: improved performance with Vista guests
SATA: fixed statistics counter
Shared Folders: several fixes (iTunes download, speed up browsing)
ATA/IDE: fixed boot from CDROM if a medium was added while the boot menu was active
Networking: provide an Intel PRO/1000 T Server (82543GC) network device emulation which is recognized by Windows XP guests
Networking: fixes for the E1000 emulation (don't crash if not attached, fixed a bug in the statistics counter implementation)
NAT: don't crash if the guest sent a DHCPRELEASE message with an invalid IP address
NAT: fixed ARP reply for the NAT gateway and for the NAT name server if the guest IP range was changed
Internal Networking: fixed shutdown if more than two VMs are connected to the same network
BIOS: allow to change the DMI information (see Sectionа9.16, “Configuring the BIOS DMI information” )
RTC: fixed UIP emulation to prevent jumping of time in Solaris guests
Windows host: VirtualBox installation directory corrected for 64 bits Windows
Windows host: fixed VBoxVRDP.exe symlink
Windows host: solved locking problems in raw partition VMDK support
Windows host: fixed stability during high system load (page fault in KeQueryActiveProcessors)
Mac OS X host: fixed crashes under certain conditions
Shared Folders: limited users without admin rights now also can use Shared Folders on Windows guests
Linux hosts: fixed default runlevel for the kernel module helper script
Solaris hosts: enabled support for VT-x and AMD-V
Solaris hosts: dynamic loading of libdlpi fixes a problem where Solaris 10 was not able to start a VM
Linux Additions: fixed runlevels for kernel module helper scripts
Linux Additions: compatibility fixes with Linux 2.6.26
Linux Additions: fixed occasional guest kernel crash during unload of the vboxadd guest kernel module
X11 Guest Additions: fixed a problem preventing clipboard transfers over 1K from host to guest