Do you have packages 'anacron' and 'ubuntu-desktop' installed? Looks like this bug is same as https://launchpad.net/distros/ubuntu/+source/update-manager/+bug/46848
-- update-notifier doesn't check repositories https://launchpad.net/bugs/50348 -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
