I was bored, so I ran a few tests. I noticed something odd... perfmon tells me I have no antivirus installed, but I do. I have MSE.
The System and Security Action Center reports MSE is up and running, and I opened MSE... it is up-to-date and running in there, but the perfmon doesn't seem to recognize it.
Could any of you who have MSE run a "perfmon /report" and see what yours says?