I have been using Mac sense 1980 and in all these years NEVER had a single virus. Now I do from time to time have hard-drive problem, my iMac is at the repair shop now getting a new hard drive, but this is the very first time I've ever had to call anyone to repair my system. I run mine extremely hard 24 -7 for Graphic Design application, heavy on memory eating programs and HUGE working files like magazines and large maps etc. It is by far the best computer I have ever owned... I have three.

Deb