AVG free 2014
is a good one. It use to be really lean, but has gone to the bloatware model now. It will add 3 extra processes and if it can't update it can cause other programs to freeze. I'll put up with it for safety.
Yes, I used to use AVG out of all the freebies my view is it was the best, with WWW repudiation for free. Now I just use MSs Security Essentials.
If ur on XP id recommend AVG free.
Out if the commercial packages Id recommend McAfee. Less pain overall.