I did my first on-demand scan with NOD32 4.0.468.0 and it took 5hrs 22min! Yikes! The longest that my previous A/V took was 2+15 for comparison and I thought that was on the slow side. I noted that someone commented on another post about playing with heuristics and achive settings. Got a couple more questions: 1.I've got a fair amount of video material on this drive. Would it be OK to make a scan exception for .avi and .mpg files? Do bugs find their way into these very often? 2. Is there a way to have NOD scan just files that are new or changed since the last scan? 3. When NOD gives a statistic such as "5hrs 22 min" for a scan time, does this include time that you've paused it to do something else and/or time that it waited for you to respond to a threat? 4. Is there a way to have NOD scan through non-stop, summarize its findings at the end and then ask you what you want it to do with suspicious files? I know this is a lot, but thanks to anyone who might assist on ony of these questions!