Just curious: Might it be that Mcafee is not aware that when updates occur that functions get turned off in McAfee Total Protection and not restarted? No offense intended but having McAfee services mysteriously shut down does not inspire confidence. I do not know which update causes this... I believe Virus definitions update does this occasionally, as does, usually, major or collective updates . It is usually the two: Computer and Files services and Email/IM services that need to be "Fixed". I think this is a separate issue from the mystery that turns System Guard off.