I've read of alot of strange issues, but evrything was working perfect until shadows kinda stretched out then dissapeared. When they came back a split second later they were kind of blocky for npc's and select objects (But not all of them oddly) =/ No clue what happened, but the settings etc haven't changed.
Update: Now textures and the screen itself start vibrating oddly every once in a while and distort. They go right back, but my shadows are still off T_T