McUpdate.exe
(McAfee Network Associates)
AutoUpdate & AutoUpgrade background utility task which comes with McAfee VirusScan 4.x. Its purpose is to automatically update your McAfee software with the latest virus updates and software updates whenever you connect to the Internet.
Recommendation :
Disable the AutoUpdate feature within McAfee VirusScan and make a point of regularly updating VirusScan manually. In our opinion there are too many problems with MCUPDATE to bother with it.