I have been always using Norotn for anti-virus and trojan (not the best for trojans) for the past five years. I'm not going to say, "never" had a virus/trojan in my pc, yet I can say that my pc hasn't acted in a way that would hint virus/trojan is in it. Lately I've been researching and making my own coclusions about this subject and what's best for my pc. Currently I'm evaluating TDS-3 (a week now), have not caught anything. However, reading ur technical background about the program seemed to me the most logical way to go and no one else has matched it yet. As for the NOD32, i haven't dld to evaluate yet. I would like the experts to please explain or provide links to the difference (technically speaking please) between NOD32 & the rest of the Anti-Virus Programs. Please note that one main reason I haven't experienced the virus/trojan/hijack/hack on my pc is simply because i research before installing anything and keep my pc to above standards where I have protocols to implement in cases as such. For that reason (one of several), which many pc users these days don't do, is why a virus/trojan etc... spreads quickly and sometimes stays in ppl pc w/o fixing.