This is most probably a duplicate of #244093 - only I am running hardy and that bug is for intrepid. The hardy-security lines does show up in the third-parties tab for me too.
-- cannot enable hardy-security updates in gui tool https://bugs.launchpad.net/bugs/245721 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs