Quote:

40% of distributed malware could not be detected via static signature scan. the only way to catch some of them is with behavioral analysis

I believe it, despite that fact that I haven't been hit by anything bad (but I don't go to certain neighborhoods where getting hit is more likely).

Spybot S&D has its "Teatimer" real-time thingamajig. I don't use it, but I know many who do and swear that it's saved them. In the beginning, it nags you a lot, but it learns as it goes, and the warnings and alerts become less frequent.