Heres in my view the 2 best secuirty apps working under Win7 CONFIRMED working....-Kaspersky v8 (KAV+KIS)-NOD32 3.0.X (Security pack+AV) zero061099

avast AV free, pc tools firewall free both work better

I didnt mean this as a competition ...but since you brought it up I run a PC repair business (not like Best Buys 1 click fix disk) and I ONLY trust Kaspersky, NOD, Spyware doctor, SuperAntispyware, and Adaware.Others like Avast as youve mentioned reveal not enough positives and too many false negatives. Go and check the vb100 tests and you can see 4 yourslef. zero061099