VMM: stability improvements for AMD-V on Windows hosts.

VMM: massive performance enhancements for AMD-V.

VMM: fixed starting of VMs with AMD-V enabled.

Networking: fixed a host interface networking regression introduced in 1.6.0.

GUI: fixed a regression introduced in 1.6.0: the fullscreen mode was left on every guest video mode switch.GUI: fixed a bug which prevented to add more than one SATA drive from the GUI.Presently, VirtualBox runs on Windows, Linux and Macintosh hosts and supports a large number of guest operating systems including but not limited to Windows (NT 4.0, 2000, XP, Server 2003, Vista), DOS/Windows 3.x, Linux (2.4 and 2.6), and OpenBSD. See “About VirtualBox” for an introduction. Not only is VirtualBox an extremely feature rich, high performance product for enterprise customers, it is also the only professional solution that is freely available as Open Source Software under the terms of the GNU General Public License (GPL). VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use.

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