My advice to every Mac OS X user is to never purchase, barrow, steal, or take a donation of any copy of "Norton Antivirus". The program is like a virus itself. It integrates itself with the deepest corners of your OS and impedes with anything it possibly can (from FPC to iChat); conflicting, messing with, and destroying. Also, if your looking for a program to throttle down your system preformance, get Norton. "Using Norton with Mac OS X is like carrying an umbrella in the Arabian desert." There are practically no viruses for OS X, and even if there was "one", it would not have anyway of traveling and spreading. In fact, I don't even think you need Norton if you're a pathetic PC user. I wasted five years of my life on that platform and never had a single issue; even with a broadband connection. As long as you're careful, and don't download strange attachments from people you don't know, you'll never have a problem. The only thing Norton does is bring peace of mind to people don't know any better. Any agreements, disagreements, or comments? If you've had a computer pull a norton on you, let us know about that too.