You temporarily need super user rights to modify that file. Open a terminal and issue the command gksudo gedit /etc/apt/sources.list.d/ubuntu-mozilla-daily-ppa-maverick.list This will ask for your password (please enter it) end then will open an editor window with the file loaded. Delete the line "ain", and save the file, close the editor and try the update again.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/753399 Title: update-manager unable to update for ubuntu 10.10 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs