This has happend under Win98 and XP Pro. When i do a full scan of a partition, the scan window just disapears and the scan stops. The scan history doesn't show the scan ever took place either. I can't figure out whats going on. I thought it was that my 900 megs of freespace on C: was being taken up but i've watched the freespace and it will still stop even if it doesn't run out. Any ideas?