cupsd is in /usr/sbin, which should be in Ubuntu's default path. Try sudo /etc/init.d/cupsys restart. You might want to take a look and see if your problem is mentioned anywhere at https://bugs.launchpad.net/distros/ubuntu/+source/gnome-cups-manager/+bugs or https://bugs.launchpad.net/distros/ubuntu/+source/cupsys/+bugs -Brian