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,性能有很大的提高.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。
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VirtualBox 3.0.2 (released 2009-07-10)
This is a maintenance release. The following items were fixed and/or added:
- VMM: fixed network regressions (guest hangs during network IO) (bug )
- VMM: guest SMP performance improvements
- VMM: fixed hangs and poor performance with Kaspersky Internet Security (VT-x/AMD-V only; bug )
- VMM: fixed crashes when executing certain Linux guests (software virtualization only; bugs & )
- ACPI: fixed Windows 2000 kernel hangs with IO-APIC enabled (bug )
- APIC: fixed high idle load for certain Linux guests (3.0 regression)
- BIOS: properly handle Ctrl-Alt-Del in real mode
- iSCSI: fixed configuration parsing (bug )
- OVF: fix potential confusion when exporting networks
- OVF: compatibility fix (bug )
- NAT: fixed crashes under certain circumstances (bug )
- 3D support: fixed dynamic linking on Solaris/OpenSolaris guests (bug )
- 3D support: fixed incorrect context/window tracking for multithreaded apps
- Shared Folders: fixed loading from saved state (bug )
- Shared Folders: host file permissions set to 0400 with Windows guest (bug )
- X11 host and guest clipboard: fixed a number of issues, including bug and
- X11 Additions: fixed some issues with seamless windows in X11 guests (bug )
- Windows Additions: added VBoxServiceNT for NT4 guests (for time synchronization and guest properties)
- Windows Additions: fixed version lookup
- Linux hosts: workaround for buggy graphics drivers showing a black VM window on recent distributions (bug )
- Linux hosts: fixed typo in kernel module startup script (bug )
- Installer: support Pardus Linux
- Solaris hosts: several installer fixes
- Solaris host: fixed a preemption issue causing VMs to never start on Solaris 10 (bug ).
- Solaris guest: fixed mouse integration for OpenSolaris 2009.06 (bug )
- Windows hosts: fixed high CPU usage after resuming the host (bug )
- OVF: accept ovf:/disk/ specifiers with a single slash in addition to ovf://disk/ (bug )
- Fixed a settings file conversion bug which sometimes caused hardware acceleration to be enabled for virtual machines that had no explicit configuration in the XML.
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