I got the same error trying to upgrade from Feisty to Gutsy today: the two files main.log and apt.log are in attachment as well as a print screen of the error.
Here is the copy paste of the Traceback (most recent call last): Traceback (most recent call last): File "/usr/bin/update-manager", line 86, in <module> view.hideStep(STEP_REBOOT) File "/usr/lib/python2.5/site-packages/DistUpgrade/DistUpgradeControler.py", line 664, in doPostUpgrade # but as good as we can do currently + savety buffer File "/usr/lib/python2.5/site-packages/DistUpgrade/DistUpgradeControler.py", line 160, in openCache self.forced_obsoletes = self.config.getlist("Distro","ForcedObsoletes") File "/usr/lib/python2.5/site-packages/DistUpgrade/DistUpgradeCache.py", line 22, in __init__ class CacheException(Exception): File "/usr/lib/python2.5/site-packages/apt/cache.py", line 39, in __init__ """ Dictionary-like package cache File "/usr/lib/python2.5/site-packages/apt/cache.py", line 52, in open """ internal helper to run a callback """ SystemError: E:Malformed 3rd word in the Status line, E:Error occurred while processing libc6 (UsePackage2), E:Problem with MergeList /var/lib/dpkg/status, E:The package lists or status file could not be parsed or opened. ** Attachment added: "screenshot of the fatal error" http://launchpadlibrarian.net/10068964/fatalerror_upgrade.png -- a fatal error of dist-upgrade at Gutsy https://bugs.launchpad.net/bugs/121267 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