I got the same error after upgrading with some ppa repositories after enabling them again in the software sources manager. Now it won't really let me do anything and tells me to report it:
"'W:Duplicate sources.list entry http://ppa.launchpad.net/pjbroad/ppa/ubuntu/ precise/main amd64 Packages (/var/lib/apt/lists/ppa.launchpad .net_pjbroad_ppa_ubuntu_dists_precise_main_binary-amd64_Packages), W:Duplicate sources.list entry http://ppa.launchpad.net/pjbroad/ppa/ubuntu/ precise/main i386 Packages (/var/lib/apt/lists/ppa.launchpad .net_pjbroad_ppa_ubuntu_dists_precise_main_binary-i386_Packages), E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/packages.ubuntu.com_precise_unknown- horizons_dists_release_main_binary-amd64_Packages, E:Pakkelisterne eller statusfilen kunne ikke tolkes eller åbnes.'" The pjbroad archive is related to the game Eternal Lands. Unknown Horizons is another game. Last line says "The package lists or the status file could not be interpreted or opened". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/959700 Title: duplicate sources.list entry after upgrade lucid2precise To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/959700/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs