Hi Paul
Have a look here:
http://forums.windrivers.com/showthread.php?t=72200
It seems several users see this message for USB devices, graphics cards, etc in Win2K as well as Win XP – it seems a difficult problem to pin down specifically.
A common suggestion is to always use the “safe eject” or “safely remove hardware” in the Windows system tray. Some say it is power related?
Cheers
Dennis