I've used the cupsd.conf you provided, restarted cupsys with /etc/init.d/cupsys restart. Then i went to the localhost:631 --> administration --> and clicked 'change settings' with only the default top option activated. Cups restarts, but the web interface keeps crashing.
-- Using web interface makes CUPS unusable https://launchpad.net/bugs/50804 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
