Just about 24 hours ago I spread the news about a major vulnerability in X.Org / XKB that makes it trivial for anyone with physical access to a Linux-based desktop system to easily bypass any screensaver lock whether you're using GNOME, KDE, or most other desktop environments. So what's changed in the past day?
Well, many people have confirmed this problem is widespread if running X.Org Server 1.11 or newer. This is affecting users right now of Gentoo Linux, Arch Linux, Debian Wheezy, Fedora 16, users of the Xorg-Precise testing stack for Ubuntu 12.04 LTS, and other distributions updating their X stack in the past few months. It doesn't matter if you're using GNOME or KDE or one of the lighter-weight alternatives like Xfce.
Rest here