I Googled it and found that several people are beginning to have problems with the same thing. It must be something new because no one seems to know how to fix the problem.
The only way I can log onto my computer is to reboot in the safe mode, click on my normal administrator icon and use the "Restore System" option.
It works OK for maybe a day, but then the IUSER_ADMIN comes back and I have to go through the reboot all over again.
Does anyone know what the problem is, and how in the world do I get rid of it?