I can confirm this bug. My upgrade hung while trying to stop mysqld, and didn't continue until I manually killed the mysqld processes.
It's now hanging on the mysqld shutdown while trying to upgrade from v5.0.22-0ubuntu6.06 to v5.0.24a9. -- upgrade failed if mysql-server is not running https://launchpad.net/bugs/46300 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
