Hi there, it seems to me that the issue with never-closed file descriptors also affects Ubuntu Feisty AND they got many confirmations for this bug (also from me). Ubuntu Bug Tracker: https://bugs.launchpad.net/ubuntu/+source/cupsys/+bug/112803 Ubuntu guys also opened a ticket in upstream cups, which can be found here: http://www.cups.org/str.php?L2438 Would be great if you could fix this, Jens