Norton AntiVirus sucks....I'm sorry, but it does. I'd personally suggest Trend PC-Cillin, but that's just the one I use. I base my opinion solely on the fact that it found one virus that my friend's norton didn't....but that's about all the proof I need.
Sorry if that sounded too much like a commercial, but I'm very defensive about my virus scanner...and I still lmao at people who use norton.