This messed up my upgrade from 12.04 -> 12.10 pretty badly today. After:
.. Preparing to replace dpkg 1.16.1.2ubuntu7 (using .../dpkg_1.16.7ubuntu3_amd64.deb) ...^M Unpacking replacement dpkg ...^M Processing triggers for ureadahead ...^M Processing triggers for man-db ...^M dpkg: error: parsing file '/var/lib/dpkg/status' near line 78310 package 'libesd0:i386':^M mixed non-coinstallable and coinstallable package instances present^M dpkg: error: parsing file '/var/lib/dpkg/status' near line 78310 package 'libesd0:i386':^M mixed non-coinstallable and coinstallable package instances present^M ... for the rest of the terminal log. ** Changed in: dpkg (Ubuntu Quantal) Importance: High => Critical -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1015567 Title: upgrade failed: mixed non-coinstallable and coinstallable package instances present To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/dpkg/+bug/1015567/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs