I called Technical Suport this morning and spoke to someone in Utah. They sent me the same FAQ that is on-line describing how to manually prepare for a fresh install (tried it and it didn't work). However, after applying the file you recommended below... all is well again. I notice that the Network Associates site and the McAfee site are very different, although they're owned by NAI. Some other signs that this is the case include: [-] After the .dat update is completed, it will actually say that the update is at .4072 [-] There are also issues with McAfee Virus Scan and Internet Explorer 5 and Express 5 (They offer on-line support at: http://naisupport.sento.com/faq.asp?URL=/kba/virusscan/vsie5andoutlookperfis sues.html [-] It also looks like you still need to include the EXTRA.DAT file in the Virus Scan directory as the .dat updates do not provide it. Thanks for the brain-storming and eventual fix! Guido Piraino [log in to unmask] > I just found the following message on the McAfee support board. It looks > promising. I've downloaded the file but have not tried it yet. > Q - After installing the latest SuperDAT, my system has been very slow! > A - This has been attributed to an older version of Mcscan32.vxd on your > system. Download the attached Mcscan32.exe, at the bottom of this > post, to > your Desktop. Next double-click on Mcscan32.exe and it will extract > Mcscan32.vxd to your Desktop (same location as the exe file). Reboot your > computer into Safe Mode and copy Mcscan32.vxd into your C:\Windows\System > folder and replace the existing file. Now restart your computer. > > http://208.31.156.32/upload/Mcscan32.EXE PCBUILD maintains hundreds of useful files for download visit our download web page at: http://nospin.com/pc/files.html