You have configuration from Breezy. On upgrade to Dapper you were asked if you want to keep old config or get a new one. Since you choosed old one, new cups package didn't overwrite it. And since new minor CUPS release didn't have any changes in config, it didn't ask you same question again.
CUPS 1.2 doesn't support RunAsUser, but you have a valid bug here: Address masks with * are broken in CUPS. -- cupsys 1.2.1-0ubuntu1 Configuration Error https://launchpad.net/bugs/52390 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
