OK, I was all set to narrow it down between KAV and NOD32 ... now I hear about mks_vir. What's the resource hit with this baby? I run BOClean also so I'm not worried about trojans or anything. I have read that 2.12 is an impressive update for NOD32 so I'm interested in that as well ... and I have heard it's very light on the resource hit. It's not because I have an older PC BTW, (3.0GHz P4, 1024MB RAM, 800 MHz FSB, etc. etc.) but because I'm a gamer, that I want a light, yet still effective scanner. And I'd prefer it be that way out of the box (I don't want to disable any features ... in fact, with NOD32 I would probably turn on "all file" scanning since I hear it defaults to only a subset).