These actually may be hardware related as messages like the following were found in this bug's logs and some of its duplicates:
Dec 7 21:52:40 ubuntu kernel: [ 1529.491510] EXT2-fs (loop1): error: ext2_lookup: deleted inode referenced: 36044 EXT4-fs (sda2): warning: maximal mount count reached, running e2fsck is recommended -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/901413 Title: 11.10 installer crashes when removing packages due to not finding gac- package-remove To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/901413/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs