*** This bug is a duplicate of bug 346386 *** https://bugs.launchpad.net/bugs/346386
I did as suggested in the previous comment. Specifically, I opened an instance of terminal and did the following: 1.) sudo rm -r /var/lib/apt/lists/* 2.) sudo apt-get update However, I got the following error messages in Terminal: ------------------------- W: GPG error: http://archive.canonical.com precise InRelease: File /var/lib/apt/lists/partial/archive.canonical.com_ubuntu_dists_precise_InRelease doesn't start with a clearsigned message W: Failed to fetch gzip:/var/lib/apt/lists/partial/archive.canonical.com_ubuntu_dists_precise_partner_source_Sources Encountered a section with no Package: header W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/partner/i18n/Index No Hash entry in Release file /var/lib/apt/lists/partial/archive.canonical.com_ubuntu_dists_precise_partner_i18n_Index E: Some index files failed to download. They have been ignored, or old ones used instead. ------------------------ When I run the update-manager from the top bar, I get the following popup: ------------------------ Could not initialize the package information An unresolvable problem occurred while initializing the package information. Please report this bug against the 'update-manager' package and include the following error message: 'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/archive.canonical.com_ubuntu_dists_precise_partner_binary-amd64_Packages, E:The package lists or status file could not be parsed 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/999979 Title: update-manager crashes when trying to Search for Updates in Ubuntu 12.04 LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/999979/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs