Until they are certified for OS X 10.5 (Leopard) I'd recommend that you not use third party utilities to do maintenance on your Mac. Disk Warrior may be an exception, with some caveats (only run it while booted from the Disk Warrior CD): http://dwleopard.notlong.com For now, I'd try to stick to using Disk Utility to repair permissions and repair your disk. It's from Apple and it comes with Leopard, so at the minimum it shouldn't harm anything. Some folks are reporting that repairing permissions under Leopard using Disk Utility can take between 5 minutes to over an hour. http://forums.macrumors.com/showthread.php?p=4401956 Also, when repairing permissions "ARDAgent" is typically coming up as a permissions problem. I'll try and keep folks posted about other changes to routine maintenance under Leopard as I hear about them. ___________________________________________ Randy B. Singer Co-author of The Macintosh Bible (4th, 5th, and 6th editions) Macintosh OS X Routine Maintenance http://www.macattorney.com/ts.html ___________________________________________