I'm experiencing a quite simillar issue: The gnome-cups-icon process seem to cause heavy cpu load at random times (I didn't manage to reproduce it on purpose) It only comes back to normal once killed / automatically restarted.
** Also affects: gnome-cups-manager (Ubuntu) Importance: Undecided Status: Unconfirmed -- The gnome-cups-icon is way too active https://launchpad.net/bugs/68789 -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs