Do you have the package compiz (not compiz-core, which is failing) when having this issue?
** Changed in: compiz (Ubuntu) Status: Unconfirmed => Needs Info -- compiz-core fails on upgrade from edgy to feisty https://launchpad.net/bugs/91363 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs