I've been running Macs since 1993. Various 040 processor units, assorted PPC G3 and G4 units, towers, laptops, you name it. Presently, I have 5 Macs in my stable, the newest being a MacPro with twin 2.66gHz Xeon Duals, 9GB RAM, and the ATI x9100 graphics card. I have spent quite a bit of time on the Mac discussion forums, and other discussion forums as well. As a result, I service and support all my machines. I run a lot of my maintenance at the command line, use some Mac freeware utilities, and am very anal about keeping my boot drive clean and free of data. I have never had any problems with any of them.