This problem also manifested itself coming out of hibernation. GNOME/pm- utils upstream believes that it was a driver issue that caused the glitch. Because this happened coming fresh from a clean shutdown, it seems this problem is due to the radeon driver:
sudo lshw -c display | grep driver configuration: driver=radeon latency=0 apt-cache policy xserver-xorg-video-radeon xserver-xorg-video-radeon: Installed: 1:6.13.0-1ubuntu5 Candidate: 1:6.13.0-1ubuntu5 Version table: *** 1:6.13.0-1ubuntu5 0 500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages 100 /var/lib/dpkg/status apt-cache policy libdrm-radeon1 libdrm-radeon1: Installed: 2.4.18-1ubuntu3 Candidate: 2.4.18-1ubuntu3 Version table: *** 2.4.18-1ubuntu3 0 500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages 100 /var/lib/dpkg/status apt-cache policy radeontool radeontool: Installed: 1.6.1-0ubuntu1 Candidate: 1.6.1-0ubuntu1 Version table: *** 1.6.1-0ubuntu1 0 500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages 100 /var/lib/dpkg/status -- Trash bin distorted after restart in Ubuntu 10.04 https://bugs.launchpad.net/bugs/602475 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