Originally Posted by
nmenaker
there is something in MSE or defender that run in the background and just EATS up resources. msmpeng.exe. I have had this problem on a couple of machines and cannot figure out what the common element is, for these vista and win7 machines to do this. so, off it went.
I only see that process using CPU time when the nightly scan is running. You sure it's doing it when no scan is in progress?