I have a user who seemed to be having hard disk problems; however, event viewer pointed me to IPX/SPX. I removed this protocol (as we don't use it) and all seemed well until I tried to install McAfee Anti-Virus 4.5. I got completly through the install and when the scanner tried to start, the hard disk stalled. I received Dr. Watson and the following error: 'The validation code for MCZIP32.dll does not match'. I ran disk check and all was fine. I then reinstalled McAfee with the same result. Any clues???