Thanks for your bugreport. Did you remove some files in /var/lib/dpkg/ manually? It looks like there is something wrong with your installation that looks rather serious, I see this in the logs:
dpkg: Ernste Warnung: Dateilisten-Datei des Paketes „python-roman“ fehlt, nehme an, dass das Paket derzeit keine Dateien installiert hat. ** Changed in: update-manager (Ubuntu) Status: New => Incomplete -- upgrade-manager abort ubuntu 7.04 upgrade, because it can't install python-roman_0.4-3build2_all.deb https://bugs.launchpad.net/bugs/132055 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs