I've got to agree w/ sk on the screen/filter cleaning. In my case it was clogged which prevented the tranny fluid from getting to the pump, which burnt up my clutches. BTW how does your fluid smell? Is the color brown or wine red? When you clean your screen if you see fibres there then you've got clutch deterioration--> bad sign.
Check it quickly as toys said, my penalty for waiting and driving was having to buy a used tranny (US$800) which i'll swap shortly.