VirtualBox最早是德国一家软件公司InnoTek所开发的虚拟系统软件，后来被Sun收购，改名为Sun VirtualBox，在Sun被Oracle收购后现改名为Oracle VirtualBox。因为他是开源的，不同于VM，而且功能强大，可以在Linux/Mac和Windows主机中运行，并支持在其中安装Win

VirtualBox最早是德国一家软件公司InnoTek所开发的虚拟系统软件，后来被Sun收购，改名为Sun VirtualBox，在Sun被Oracle收购后现改名为Oracle VirtualBox。因为他是开源的，不同于VM，而且功能强大，可以在Linux/Mac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。

Changes in VirtualBox 3.2.12 (2010-11-30):

* VMM: fixed rare host crash when running -bit guests on 32-bit hosts (bug #7577)

* VMM: fixed host reboots under rare circumstances due to NMIs triggered by active performance counters (Linux hosts in non-VT-x/AMD-V mode only; bug #4529)

* VMM: fixed out of memory guru meditation for large memory guests (bug #7586)

* VMM: fixed a guru meditation related to large pages

* VMM: use new VT-x feature to keep the guest from hogging the CPU

* Snapshots: implemented deleting the last remaining snapshot while the VM is running

* GUI: perform the checks for exceeding the size limit of the host file system and for broken asynchronous I/O on older Linux kernels with ext4 / xfs file systems not only when starting the VM from scratch but also when starting from a saved state

* NAT: fixed memory leak (3.2.0 regression; bugs #6918, #7353)

* Networking: fixed VM reset handling in e1000

* VRDP: fixed rare crash in multimonitor configuration

* Display: fixed occasional guest resize crash

* Mouse: don't send relative mouse events together with absolute mouse events (3.2.10 regression; bug #7571)

* Keyboard: fixes for the USB keyboard emulation; fixes for Koran keyboards

* Serial: don't hang if the host device would block during open (bugs #5756, #5380)

* Serial: fixed modem status lines (Linux hosts only; bug #812)

* Graphics: Horizontal resolutions are no longer restricted to a multiple of 8 pixels (bug #2047; requires Guest Additions update).

* USB: fixed a crash with older Linux kernels and non-ASCII characters in device strings (Linux hosts only; bug #6983, #7158, #7733; version 3.2.8 contained an incomplete fix)

* USB: fixed a crash under rare circumstances (bug #7409; Windows hosts only)

* iSCSI: respond to NOP-In requests from the target immediately to avoid being disconnected if the guest is idle

* 3D support: fixed a crash under certain circumstances (bug #7659)

* 3D support: fixed crashes for GLUT based apps (bug #6848)

* 3D support: added missing GLX 1.3 functionality (bugs #7652, #7195)

* 2D Video acceleration: fixed potential deadlock when saving the VM state (bug #4124)

* Windows hosts: another fix for BSODs under certain circumstances in VBoxNetFlt.sys (bug #7601)

* Solaris hosts: fixed host USB DVD drive detection

* Mac OS X hosts: fixed swapped keys for certain ISO keyboard types (bug #2996)

* Linux hosts: added link state handling for TAP devices needed for proper operation with bridged networking on kernels 2.6.36 and above (bug #79)

* Linux hosts/guests: Linux 2.6.37 fixes

* Linux Additions: properly compile the vboxvideo module if DKMS is not installed (bug #7572)

* Linux Additions: fixed a memory leak when accessing non-existing files on a Shared Folders (bug #7705)

* Windows Additions: skip none-mapped user accounts when enumerating user accounts for VM information

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