VirtualBox是一个半虚拟的软件，个人感觉比VMware快，我一般使用Fedora系统，在Fedora系统里，虚拟一个WindowsXP系统和Ubuntu系统。
VirtualBox1.6在9月2号发布，VirtualBox2.0在9月4日就发布了。这里发布主要针对Mac OS X系统的一些功能，官方原文如下：
VirtualBox1.6在9月2号发布，VirtualBox2.0在9月4日就发布了。这里发布主要针对Mac OS X系统的一些功能，官方原文如下：
This version is a major update. The following major new features were added:
- 64 bits guest support (64 bits host only)
- New native Leopard user interface on Mac OS X hosts
- The GUI was converted from Qt3 to Qt4 with many visual improvements
- New-version notifier
- Guest property information interface
- Host Interface Networking on Mac OS X hosts
- New Host Interface Networking on Solaris hosts
- Support for Nested Paging on modern AMD CPUs (major performance gain)
- Framework for collecting performance and resource usage data (metrics)
- Added SATA asynchronous IO (NCQ: Native Command Queuing) when accessing raw disks/partitions (major performance gain)
- Clipboard integration for OS/2 Guests
- Created separate SDK component featuring a new Python programming interface on Linux and Solaris hosts
- Support for VHD disk images
In addition, the following items were fixed and/or added:
- VMM: VT-x fixes
- AHCI/SATA: improved performance
- GUI: keyboard fixes
- Linux installer: properly uninstall the package even if unregistering the DKMS module fails
- Linux additions: the guest screen resolution is properly restored
- Network: added support for jumbo frames (> 1536 bytes)
- Shared Folders: fixed guest crash with Windows Media Player 11
- Mac OS X: Ctrl+Left mouse click doesn’t simulate a right mouse click in the guest anymore. Use Hostkey+Left for a right mouse click emulation. (bug #1766)
