I agree with MS. The majority of infections are user error. I don't run AV on my machine full time, only install and run one every once in a while. When I do decide to run one, I'm always clean.
“What the hell did you expect? Leave Vista under the pillow and the OS fairy would make it Win7?” -El Fiendo
“And Bring Mailman back god damnit, he is the Eric Cartman of TPU” -MRCL