Public bug reported: I have enabled (and disabled) lots of 3rd party repositories, so that's probably the reason for the failure. my guess is that it's because of the 3rd party compiz repository deb http://www.beerorkid.com/compiz/ dapper main. Because many people have enabled it I'd thought I provide the log files anyway.
** Affects: update-manager (Ubuntu) Importance: Undecided Status: Unconfirmed -- upgrade from dapper to edgy fails, probably because of third party compiz repository https://launchpad.net/bugs/67144 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs