Well, I never did install that critical update doodad for precisely that reason... I don't trust them, I'll patch it all when I'm good and ready! Well, This is in Windows 98... At any rate, I just found it an odd thing for them to think of. As for Microsoft Management Console, Is that for 9x or NT/2000? The originating program was the actual defrag.exe program... (Unless someone is using an extremely creative and foolish implementation of TooLeaky or something )