I had the same problem. Your bug report fixed what I thought was going to require a complete format and reinstall.
The problem appears to be that I had left my version of Karmic without enough updates, and then attempted a distribution upgrade from Karmic to Lucid. Whatever GUI process kicked off the rewrite of /etc/apt/sources.list to show the sources for Lucid, did not first do whatever checks were required for baseline versions of things like apt- get and dpkg and its related dependancies. This created a bit of a bootstrap problem, resulting in the inability to install a core package like linux-utils, which also can not be uninstalled without creating huge problems. It is pretty unintuitive to figure out that dpkg itself is the thing to reinstall to "rebase" my linux system on a new core. But hey, it makes sense now that I've found your report. Hooray for Google, and this bug database. Warren -- Upgrade from Karmic to Lucid failed https://bugs.launchpad.net/bugs/572212 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