My gosh...not easily visible, but mine were compacted with dust. The sound is still loud, but I wil try and see if blowing out anything else helps. Somebody suggested redoing the heat sink since my MDD 866 had gotten so loud. I know for a fact that the person who replaced this processor puts on very little silver compound. If I am going to take it apart, is that definetly the way to go? On my old B+W G3s, I used to now worry too much and goobered things on, swapping the processors without blinking an eye, but on the newer machines, the heat sinks are so much bigger and I don't know much about them. Is and extremely thin film the way to go for sure? Thanks, Inga On Oct 7, 2007, at 5:50 AM, Jay E. Krauss Jr wrote: > I have two 1.25 MDDs; from experience I can state that the > shield inside the front cover (behind the "Buick" vents, can become > totally covered over with dust, preventing air entry. > Jay E Krauss Jr -------------- next part -------------- An HTML attachment was scrubbed... URL: http://listserver.themacintoshguy.com/pipermail/g4/attachments/20071007/cebc10dd/attachment.html