VirtualBox is a family of powerful x86 virtualization products for enterprise as well as home use. 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). See "About VirtualBox" for an introduction.
Presently, VirtualBox runs on Windows, Linux, Macintosh and OpenSolaris 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), Solaris and OpenSolaris, and OpenBSD.
VirtualBox is being actively developed with frequent releases and has an ever growing list of features, supported guest operating systems and platforms it runs on. VirtualBox is a community effort backed by a dedicated company: everyone is encouraged to contribute while Sun ensures the product always meets professional quality criteria.
VirtualBox是德国一家软件公司InnoTek所开发的虚拟系统软件，它不仅具有丰富的特色，而且性能也很优异。更是开源的，成为了一个发布在GPL许可之下的自由软件。VirtualBox 可以在 Linux 和 Windows 主机中运行，并支持在其中安装 Windows (NT 4.0、2000、XP、Server 2003、Vista)、DOS/Windows 3.x、Linux (2.4 和 2.6)、OpenBSD 等系列的客户操作系统。假如你曾经有用过虚拟机软件的经历的话，相信使用 VirtualBox 不在话下。即便你是一个新手，也没有关系。VirtualBox 提供了详细的文档，可以助你在短期内入门。
VirtualBox 2.0.6 (released 2008-11-21)
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
下载地址：
http://download.virtualbox.org/virtualbox/2.0.6/VirtualBox-2.0.6-39760-Win_x86.msi
http://download.virtualbox.org/virtualbox/2.0.6/VirtualBox-2.0.6-39760-Win_amd64.msi