After a clean install of XP and a forced manual install to SP3, I have noticed svchost.exe SYSTEM hogging 100% cpu usage. After some fiddling around and killing the process tree, I have come to the conclusion that this problem is some how related to Updates/Automatic Updates. I have auto update on and no updates have installed, I even had to manually upgrade to SP3. My system does not fail and nothing seems off when I kill the process. Any suggestions on why this may be happening, or if I need a certain update?