ok i just solved the problem no more need to search...found it in some other launchpad bugs report...
just take care of the whole directory: sudo rm /var/lib/apt/lists/* -vf then try updating: sudo apt-get update then try to use the update-manager just restart your ubuntu and thats all;upgrade done. ** Changed in: update-manager (Ubuntu) Status: In Progress => Fix Released -- You received this bug notification because you are a member of Sabily Team, which is a bug assignee. https://bugs.launchpad.net/bugs/874425 Title: Bug when upgrading Status in “update-manager” package in Ubuntu: Fix Released Bug description: 'E:Encountered a section with no Package: header, E:Problem with MergeList /var/lib/apt/lists/archive.canonical .com_dists_natty_partner_i18n_Translation-en, E:Les listes de paquets ou le fichier « status » ne peuvent être analysés ou lus.' To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/874425/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~sabily.team Post to : sabily.team@lists.launchpad.net Unsubscribe : https://launchpad.net/~sabily.team More help : https://help.launchpad.net/ListHelp