VirtualBox 4.1.0 Beta 3

VirtualBox是一款开源全免费的虚拟类软件，它最大的亮点的是在保证免费的同时还提供了不亚于同类商业软件的强大功能，受到了众多用户的喜爱。

支持安装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.

主要更新：
    * GUI: fixed disappearing settings widgets on KDE hosts (bug #6809)
    * Storage: fixed hang under rare circumstances with flat VMDK images
    * Storage: a saved VM could not be restored under certain circumstances after the host kernel was updated (bug #8983)
    * Storage: refuse to create a medium with an invalid variant (for example Split2G with VDI; bug #7227)
    * Snapshots: none of the hard disk attachments must be attached to another VM in normal mode when creating a snapshot
    * USB: fixed occasional VM hangs with SMP guests (bug #4580)
    * USB: proper device detection on RHEL/OEL/CentOS 5 guests (partial fix for bug #8978)
    * ACPI: force the ACPI timer to return monotonic values for improve behavior with SMP Linux guests (bug #8511 and others)
    * RDP: fixed screen corruption under rare circumstances (bug #8977)
    * rdesktop-vrdp: updated to version 1.7.0
    * OVF: under rare circumstances some data at the end of a VMDK file was not written during export
    * Mac OS X hosts: Lion fixes
    * Mac OS X hosts: GNOME 3 fix
    * Linux hosts: fixed VT-x detection on Linux 3.0 hosts (bug #9071)
    * Linux hosts: fixed Python 2.7 bindings in the universal Linux binaries
    * Windows hosts: fixed leak of thread and process handles
    * Windows Additions: fixed bug when determining the extended version of the Guest Additions (4.0.8 regression; bug #8948)
    * Solaris Additions: fixed installation to 64-bit Solaris 10u9 guests (4.0.8 regression)
    * Linux Additions: RHEL6.1/OL6.1 compile fix
    * Linux Additions: fixed a memory leak during VBoxManage guestcontrol execut

VirtualBox 4.1.0 Beta 3下载：http://download.virtualbox.org/virtualbox/4.0.10/