I just updated the DAT files from the McAfee website and tried to run virus scan ( I have v4.0) on my C: drive. It starts scanning and then at 417 files it crashes and the computer restarts. Since it's crashed, on start up I get a bunch of code after the Windows splash screen and I have to press a key to continue. I haven't noticed any other problems though. I'm running Windows 98 SE. Any idea what I might have unleashed. Thanks for any help.