Ask Slashdot: Light-Footprint Antivirus For Windows XP?
New submitter Bauermlb writes "I service computers for retired folks in my community, often older machines with modest speed (2 GHz Centron) and modest memory (512 MB). Adding AVAST to one of these machines slows it to a crawl. Any recommendations for a light-duty antivirus program with a low overhead? (These people do not tend to surf 'dirty' sites.)"
I've seen way better performance with it than with McAfee, Avast, etc.
Detection benchmarks typically put it on par with the other free solutions, though it changes from month to month.
Microsoft is killing updates for XP in a little under 9 months. Get them onto linux or a new PC or it may not matter how good of an antivirus you put on there after that.
Personally I'd rather have my idiots at home glued to the TV than out doing idiotic things