VirtualBox 是一款功能强大的 x86 虚拟机软件，它不仅具有丰富的特色，而且性能也很优异。更可喜的是，VirtualBox 于数日前走向开源，成为了一个发布在 GPL 许可之下的自由软件。
VirtualBox 原先是德国一家软件公司InnoTek所开发的虚拟系统软件（已被SUN收购，而SUN已被Oracle收购），它不仅具有丰富的特色，而且性能 也很优异。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 3.2.6 版本是一个维护版本，主要修正bug的列表如下：
* 允许32位 Host 运行 64位 SMP Guest，但不包括 Mac OS X 的 Host。(此特性需要 VT 支持)
* 修正了当离开全屏模式下 2D 视频加速崩溃的情况。
* 为一个影响在 ext4/xfs 文件系统使用非同步 I/O 的内核 bug 提供了一个解决方案。
* 能够在 Arch Linux Guest 把 DRI 驱动安装到正确的位置上。
* 修正了64位 Windows Guest 的32位程序的 OpenGL 支持问题。
* 为多个 VRDP 远程连接增加了一个 GUI 设置，对开启多屏输出十分有用。
VirtualBox 3.2.6 (released 2010-06-25)
This is a maintenance release. The following items were fixed and/or added:
* VMM: fixed host crash when running 64-bit guests on 32-bit hosts with certain Intel CPUs (VT-x only; bug #6166)
* VMM: allow 64-bit SMP guests on 32-bit hosts (VT-x and AMD-V only; does not apply to Mac OS X, which already supports it)
* VMM: fixed Guru mediation if guests with more than 2GB are booted with VT-x/AMD-V disabled (bug #5740)
* VMM: fixed TR limit trashing (VT-x and 64-bit host only; bug #7052)
* Page Fusion: several bug fixes for SMP guests (including bug #6964)
* Teleportation: several fixes and improvements
* Mac OS X server guests: compatibility fix
* EFI: fixed memory detection for guests with 2GB or more RAM assigned
* GUI: added a workaround for a Linux kernel bug which affecting asynchronous I/O on ext4 / xfs file systems (Linux hosts only)
* GUI: added setting for multiple VRDP connections; useful if multiple screens are enabled
* GUI: another fix for the keyboard capturing bug under metacity (bug #6727)
* GUI: fixed quit dialog when used in seamless or fullscreen mode (Mac OS X hosts only; bug #6938)
* GUI: handle the extra key on the Brazilian keyboard on X11 hosts again (bug #7022).
* 2D Video acceleration: fixed crashes when leaving the fullscreen mode (bug #6768)
* VBoxManage: fixed storageattach error handling (bug #6927)
* VBoxManage: fixed dhcpserver add (3.2.0 regression; bug #7031)
* Storage: fixed hang with images located on filesystems which don't support async I/O (bug #6905)
* Storage: fixed raw disks on Windows hosts (3.2.0 regression; bug #6987)
* LsiLogic: fixed hang with older Linux guests
* BusLogic: fixed hang during I/O
* SATA: set initial number of ports to 1 as some guests can't handle 30 ports (e.g. CentOS 4 and FreeBSD; bug #6984)
* SATA: performance improvement
* SCSI: fixed error when using the full format option during Windows installation (bug #5101)
* iSCSI: fixed authentication (bug #4031)
* Host-only/bridged networking: fixed excessive host kernel warnings under certain circumstances (Linux hosts only; 3.2.0 regression; bug #6872)
* NAT: fixed potential memory leaks
* NAT: increased the size of the memory pool for 16K Jumbo frames (performance tweak)
* NAT: allow to link/unlink the network cable even if the VM is currently paused
* E1000: disconnect cable was not properly handled if the NIC was not yet initialized by the guest
* OVF: export performance optimization
* OVF: upgraded OS type definitions to CIM 2.25.0 so that Windows 7 and other OSes are now tagged correctly on export
* Settings: the setting for disabling the host I/O cache was sometimes not properly saved
* Settings: save machine state into XML correctly even when snapshot folder has been changed to a non-default location (bug #5656)
* USB: allow the guest to disable an EHCI port
* USB: find a valid language ID before querying strings (bug #7034)
* POSIX hosts: fixed several memory leaks (3.2.0 regression)
* Solaris hosts: fixed VDI access problem under certain circumstances (IDE/SATA; 3.2.0 regression)
* Solaris hosts: fixed VM fails to start on 32-bit hosts (3.2.0 regression; bug #6899)
* Windows hosts (32-bit): increase guest RAM limit if the host kernel allows for more virtual address space
* Linux Additions: re-read a directory after a file was removed (bug #5251)
* Linux Additions: install the DRI driver in the right location on ArchLinux guests (bug #6937)
* X11 Additions: fixed spurious mouse movement events (bug #4260)
* Solaris Additions: fixed guest control execution
* Windows Additions: automatic logon on Windows Vista/Windows 7 is now able to handle renamed and principal user accounts; added various bugfixes
* Windows Additions: improved command line parsing of the installer
* Windows Additions: fixed driver verifier bugcheck in VBoxMouse (bug #6453)
* 3D support: fixed OpenGL support for 32bit apps under 64bit Windows guests
Oracle WM VirtualBox 3.2.6 for Windows 下载：
http://download.virtualbox.org/virtualbox/3.2.6/VirtualBox-3.2.6-63112-Win.exe