Hi. I'm new here, and don't actually have a Mac myself. But my Dad does. He has a powerbook or notebook or whatever it's called and a cable connection to the internet. His computer is usually much slower online than my PC with DSL. It often freezes up, and often just kicks you offline (Explorer) repeatedly. When this happens on my PC, it is usually because of spyware. And I've heard people argue that despite popular opinion, Mac's are vulnerable to it. I see from searching around here, that not too many of you believe that though. He does have a VERY messy desktop, full of saved pictures and webpages etc. If it is worth it, what anti-spyware program should he buy? And if not, is there another obvious "quick-fix" to this problem? (He has no initiative to deal with this, & I don't have a lot of time or computer knowledge)?