I work for a small IT Consultancy and have a number of clients who use Macs. As part of the support package we provide, we perform a quarterly health check on all IT equipment from Routers and Firewalls to Servers and Workstations. For Wintel machines we have a full checklist of things to do; Windows/Office Updae, Anti-Virus software up to date, defrag disk, delete temp files etc. About 20 things in total. What we don't have is a similar checklist for Macs. Aside from updating to 10.3.6 and cheking disk space could anyone suggest a few things to look for, utilities to run (need to be freeware otherwise we'd have to buy licences for each client), or just things to tidy up. I should mention that I'm new to Macs but have managed to fix a number of problems that have been presented to us and find them very intuitive and a joy to work with. I might get round to buying one for myself sometime.