I suggest to mark this as a duplicate to https://launchpad.net/distros/ubuntu/+bug/65901. Seems to be the same problem.
-- Printer settings in systemsettings/kcontrol don't work any more (Connect to CUPS faild) https://launchpad.net/bugs/66118 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
