nod32 is so self sufficient i forget i have it running most of the time. It never asks me for any decisions and it takes limited system resources, 100x better than norton. I use zonealarm as well for firewall, that combination is pretty good for me.
Nod32 is the best MONEY can buy.... Note the emphasis on MONEY....Nod32 is not cheap but it is good and used by most major corporations...like Micrsoft