So I have been running Defraggler for a couple of years now. It usually takes a couple of days to finish, but apparently its not suppose to? I have to set of time out of the year, once or twice to run it. I am running it right now, first time this year. It will take about 60 hours for it to finish, 12% right now. Would it help if I ran the debug version and send you the log file? Seeing as I am also one of the people that is having trouble with the software being slow. I run it in Safe mode under WinXP and always have. Does it really matter? Anyway, just wanted to let you know. Its always been like this for me, for years. So I just expected it to be that way, thats the way the Windows one was on my older PC's (Win 98 era).