Daniel, I agree. See Screenshot. The dead area pretty much corresponds to the switcher window for two applications. I was able to reproduce this twice, but not exactly sure how. In all cases I first noticed the dead area while (manually) selecting every odd file (holding down Ctrl) with nautilus in a folder with > 100 items.
** Attachment added: "Bildschirmfoto-1.png" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/709461/+attachment/2134867/+files/Bildschirmfoto-1.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/709461 Title: Application windows can sometimes fail to display and will mask regions of the screen -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs