I'm getting this too. Changing to another background and back fixes it, until it happens again.
My PC is 32-bit though. Also, maybe related, my computer's idle time is no longer reported after a while, thus my screensaver no longer fires, until I log out and back in. -- GNOME background being imposed on another background https://bugs.launchpad.net/bugs/472793 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