reply to MarkAW
Re: What AV are you running? I have experienced about 1-2 FP's/year with Avast, and 1 FP with MSE in 1 year's use. None of the FP's I had were serious.
I had more trouble with Norton (paid) in 2002-4 than with all of the free AV's combined. Although I have heard that Norton has improved its product and my ISP makes it available free to its customers, I have not been eager to try it again.