I am running Speed disk in System works 2005 (yes I know its old, but who can afford new when unemployed). I was running it, and NAV (2010) started running and all of a sudden the Speed disk stopped moving things. It still shows my C drive as very fragmented. I told it to stop, but that doesnt do anything (or at least it doesn't appear to since it still says moving 0% - even after telling it to exit, and restarting Speed Disk). SO, I am unsure of whether to reboot or not since I hear horror stories about rebooting after speed disk did what it is doing to me, and then never rebooting. How can I be sure it is stopped? (no resources seem to be used so I assume it is), how can I get it to clear, reanalyze and restart the defrag without rebooting to clear it all? I am using Windows XP SP3.