thers no need to defrag.im telling u i installed moh in afternoon,i played a lil bit just to get a taste n i must be getting 30 fps(not 60 obviously)then i shut down my lappy and then again ran it on 7.0 pm.i was surprisingly getting not more than 5 fps.same in source games.i dont know if my card is weaker than 6600 or 5200 till now i was happy i got nice fps in wotever i ran im med-high details but i have no idea wot moh has done.it has to something with the fan or the temp