These are the "broken" packages on my system. Might be part of the problem?
** Attachment added: "screenshot" http://librarian.launchpad.net/6722870/broken.png -- Can't calculate the upgrade with unofficial mesa/compiz packages https://launchpad.net/bugs/58424 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
