I'm having this issue as well(Virus scan / real time shuts off) , looking at this forum section so is alot of mcafee users since 1 week ago. Re-install didn't work for me nor it seems for anyone else with this problem. Can Mcafee please confirm its a product/update bug and not the users?
I am also having a message asking to check protection status and saying that "part of your protection must be fixed" since last night. I tried the virtual technician but only part of the problem was fixed. I am using XP Professional Ver. 2002, Service pack 2. I assumed it is a system problem but I am uncomfortable with the icons in the task bar with a big red X on them. Help!!