This is misconfigured CUPS. You have duplicate Listen/Port entrys in your configuration. Note that
Port 631 Listen localhost:631 Port 631 instructs CUPS to connect to localhost:631 three times. This will not work. Remove "Port 631" from cupsd.conf and decide what you'll have in ports.conf; Listen localhost:631 or Port 631. You can't have both. Also note that your dapper's cups 1.2.1-0ubuntu1 will fail to start due line "Allow From 192.168.0.*" (bug 52390). On the other hand, that line is duplicate of "Allow From @LOCAL" if your computer is in 192.168.0.0/24 subnet. Rejecting this bug. It's misconfigured CUPS. ** Changed in: cupsys (Ubuntu) Status: Unconfirmed => Rejected -- Update to cupsys 1.2.1-0ubuntu1 breaks printing system https://launchpad.net/bugs/52491 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs