Hi there, Recently, I've been running some scans on my Windows XP machine using NOD32 Antivirus v3. Usually, since they take about 2 hours, I leave the scan running and turn the monitor off while I go about my daily business. It's been working great since I got it last year. However, recently, twice I've had this issue: when I get back to my computer and turn my monitor on again, I'm surprised to find that Windows XP is now at the user login screen, when I'd left it on the desktop to leave the scan going. I can't think of any reason why this is happening, since I've completed a full scan successfully yesterday morning. The scans I did last night and earlier today have given me this login screen when I return. Since I'm away from the computer during the scan, its hard to tell if the scan's actually completing, or it reaches some error in the middle and crashes and the OS reboots. I think something's going on with the OS, because when I login to my desktop again, my Steam icon is at the bottom of my icon grid on my desktop, something that always happens when my OS crashes. Checking the event log, there are no errors, but about a half hour after the scan was started, it shows the event log as well as the other bootup programs all starting up, meaning somewhere during the scan it ran into a problem and caused the OS to crash and reboot I'm presuming. Finally, if I go to my log files in NOD32, it shows the scan I'd initiated as "Scanning in progress" when there's nothing going on in the scan menu. Any ideas? I get the feeling I'll have to actually watch a scan in progress to see what's going on, but I'd appreciate it if anyone could help otherwise.