VirtualBox虚拟机三大特点：免费、小巧、多国语言（含中文）。VirtualBox可以跨平台运行操作，支持安装Windows (NT 4.0、2000、XP、Server 2003、Vista、Win7、Win8、Win8.1等)、DOS/Windows 3.x、Linux、OpenBSD等系列的客户操作系统。

上个月VirtualBox发布稳定版VirtualBox 4.3.0，修复了在Win8.1下引起了异常的睡眠和休眠问题，这个月又迎来了新版VirtualBox 4.3.2的小幅升级，依旧是对性能和bug的修复和完善。

VirtualBox 4.3.2更新日记：

• VMM: fixed restoring of the auxiliary TSC MSR in VT-x that caused host BSODs on Windows 8.1 hosts and unpredictable behavior on other hosts (bug #12237)

• VMM: provide fake values for a couple of MSRs to make more guests happy on certain hosts

• VMM: fixed detection of VT-x on certain machines where the BIOS would not set the VMX LOCK feature bit, which affected the VM settings in the GUI

• VMM: fixed TPR threshold which caused BSODs on Windows XP guests that use the I/O APIC (VT-x only; bug #12227)

• VMM: fixed PATM saved state incompatibility for software virtualized VMs (bug #12222)

• VMM: don't fail if AMD-V isn't available if the VM is configured to use software virtualization

• GUI: fixed guest resize breakage on visual representation mode change (when switching from normal to fullscreen etc)

• GUI: make sure the guest screen is resized after restoring a VM from a saved state if the host screen size changed

• GUI: disabled SCROLL LED sync from HID LEDs synchronization (Mac OS X hosts only)

• Webcam passthrough improvements including GUI support (see the manual for more information)

• Guest Control: implemented more IGuestSession methods

• Guest Control: added support for deleting and renaming guest files + directories in VBoxManage

• Guest Control: various bugfixes

• API: incorrect handling of hardware UUID default value, resulting in an all zero DMI/SMBIOS UUID, which leads to Windows requesting re-activation (4.3 regression; bug #12244)

• 3D support: fixed crash on shutdown if 2D video acceleration is enabled (Mac OS X hosts only)

• 3D support: miscellaneous fixes

• Storage: fixed detection of CD/DVD media when switching from an empty to a host drive with passthrough enabled

• Storage: fixed hang of the VM process when the disk is full under certain circumstances

• NAT: listen for changes of NAT Network setting at runtime

• NAT: NAT Network DHCP server now saves leases to a persistent storage

• Main: monitor changes in host DNS configuration

• Mac OS X host: reworked a mechanism of adding a VM desktop alias from the VM selector

• Mac OS X installer: remove old kernel extensions during upgrade (bug #12258)

• Linux Additions: correctly set umask before installing (bug #12166)

• X11 Additions/3D: fix freezes starting 3D desktop (bug #11503, thank you Sam Spilsbury)

• X11 Additions/3D: fix depth buffer support (bug #11905)

• X11 Additions/3D: fix Age Of Empires 3 rendering (bug #11331)

• Windows Additions/3D: fix Google Earth plugin rendering

• Windows Additions/WDDM: autoresize fixes

VirtualBox 4.3.2官方下载：

面向Windows平台：支持Windows XP、Vista、Win7、Win8、Win8.1等平台，101MB

注：Virtu