Comment 6 for bug 172813

Looking at the logs again, now I'm getting the following errors in /var/log/messages
Jan 25 13:57:13 nash cupsd[11555]: *** WARNING *** The programme 'cupsd' uses the Apple Bonjour compatiblity layer of Avahi.
Jan 25 13:57:13 nash cupsd[11555]: *** WARNING *** Please fix your application to use the native API of Avahi!
Jan 25 13:57:13 nash cupsd[11555]: *** WARNING *** For more information see <http://0pointer.de/avahi-compat?s=libdns_sd&e=cupsd>
Jan 25 13:57:13 nash kernel: [21308.125266] audit(1201287433.582:4): type=1502 operation="inode_permission" requested_mask="a" denied_mask="a" name="/dev/tty" pid=11555 profile="/usr/sbin/cupsd"

I do believe that the last line is what is causing things to fail.