Is a virus some unwanted interference with your computer's operation? If that's your definition, and it's definitely mine, then you don't want McAfee. I had them for a while, and when my subscription ran out, they began bombarding my computer with ads. I couldn't get rid of them. I'd click the little "X", but two seconds later they were back on. Sometimes they were just in a corner of my screen, but other times they occupied the entire screen. I signed up with Norton instead, and it's yet to be determined whether it's any better. But I suggest that you avoid McAfee. They just aren't worth the fuss.
