i updated to windows media player 11 and video was stuttering badly. for some reason video also became stuttery on divx player. so like an idiot instead of reading first and using add/remove programs in the control panel i used Your Uninstaller 2006 to remove everything the wmp 11 update installed. now it doesn't appear in the add/remove programs panel for me to rollback to wmp 10 like instructed on the microsoft site. and before someone suggests it, i keep system restore disabled so thats not an option.