My MDD 866 WInd Tunnel started getting louder a couple of months ago. It seems to be holding now, but really, it is quite loud.....have to turn the TV on pretty loud to be able to hear it well. Is it just a matter of replacing or oiling the fan, or does it mean something further than that? When I first got the machine, the processor was fried, and then it sounded even louder than this...new processoer quieted it doen. I don't even now if the two are related at this point or not. (Did that make sense?) Thanks, Inga