Qubes OS 2 Beta 3 发布，面向安全的、基于Fedora的桌面Linux发行

Qubes OS是面向安全的、基于Fedora的桌面Linux发行，其主要理念是基于隔离的安全，而这靠轻量级的Xen虚拟机来实现隔离域。它旨在结合两个貌似矛 盾的目标：如何使不同域之间的隔离尽可能强，这主要靠能够使可信代码尽量小的更灵巧的结构，以及如何使这种隔离尽可能无缝和容易。
Joanna Rutkowska has announced the availability of the third beta release of Qubes OS 2, a Fedora-based distribution designed to provide strong security for desktop computing: " Today we're releasing Qubes R2 beta 3, the latest milestone on our roadmap for Qubes R2. Even though it is still called a beta, most users should install it, because, we believe, it is the most polished and stable Qubes version. Highlights: seamless GUI virtualization for Windows 7-based AppVMs, and support for HVM-based templates (e.g. Windows-based templates); a much more advanced infrastructure for system backups; it is now possible to set 'autostart' property on select VMs; we now ship the installer with multiple kernel versions (3.7, 3.9, and 3.11); new monitor layout is now dynamically propagated to the AppVMs; cleanups and fixes." See the release announcement for further information. Download from SourceForge: Qubes-R2-Beta3-x86_64-DVD.iso (2,464MB).