After clicking "ok" instead of reporting the bug, restored original version of /etc/apt/sources.list
-- [Hardy] update-manager could not calculate the upgrade due to a pre-release version https://bugs.launchpad.net/bugs/201249 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
