I'm not sure why, but this fixed my problem immediately (at least for my current session):
If possible, bring up a terminal and run metacity --replace I don't remember where I found this suggestion, but it worked for me. -- Switch Desktop Mode corrupted settings https://bugs.launchpad.net/bugs/349519 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