Judging from the suggested workaround, I wouldn't at all be surprised, if this was caused by this: http://lists.freedesktop.org/archives/compiz/2008-May/003125.html
-- Compiz / vnc screen refresh with nvidia-restricted driver/VirtualBox/ATI fglrx driver https://bugs.launchpad.net/bugs/353126 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs