avast! Wins SC Award
Well deserved in my opinion. My Dad recommended this to me a few years ago after I complained about McAfee wanting me to pay for upgrade to the their XP version when I had just purchased a subscription for Win2K before I realized I would be upgrading my OS.
avast! is free for personal use so there is absolutely NO reason for not having adequate virus protection on your home PC's. Their auto updating has always worked flawlessly for me. I see a new virus data file update on almost a daily basis so you can be confident you are up to date and protected against the latest known viruses.