It's a major improvement over the last version, with better detection too. It's not in Kaspersky's league just yet, but it's way better than most of the stuff out there and is especially effective at catching drive-by and exploit attacks. Since that's the major worry these days (you'd have to be a bit slow to download a trojan and allow it through UAC if you're running Vista/7) it'll do fine. I like it. 