This problem caused me quite a headache today as well. I would advise against editing the installation database, but would suggest the following:
The problem is related to the courier-authdaemon. Instead of removing the knowledge of the install system (security upgrades will be ignored!), manually remove the authdaemon: sudo dpkg --force-remove-reinstreq -P courier-authdaemon Then continue the upgrade as normal, if necesarry selecting the courier packages manually once the upgrade has completed. Works perfectly now here! -- apt-get broken after upgrade to edgy eft (courier-authdaemon package) https://launchpad.net/bugs/64615 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
