After using AVG Free anti-virus for many years, we have switched all of our home PCs to Kaspersky Internet Security 2010.
AVG served us faithfully for five years. It never malfunctioned. Still, it didn’t far so well in a recent high-profile test of anti-virus products.
Kaspersky Internet Security 2010 can be installed on up to three home computers. It comes with (of course) anti-virus software, plus a firewall, parental controls, and the ability to run selected applications in a sandbox. It has other features that I will write about in future blog posts.
If you’re on a budget, the free version of AVG is still good, and way better than nothing. I still recommend AVG for people who simply don’t have the cash for Kaspersky or another product.
Peter H. Gregory 
AVG recently let a nasty through onto one of our Windoze boxes. Dumped it in favor of Microsoft’s new free thing. So far, so good.
kspersky is the best AV