<HTML><BODY style="word-wrap: break-word; -khtml-nbsp-mode: space; -khtml-line-break: after-white-space; ">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.<DIV><BR class="khtml-block-placeholder"></DIV><DIV>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?</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV>Thanks,</DIV><DIV>Inga</DIV><DIV><BR class="khtml-block-placeholder"></DIV><DIV><BR><DIV><DIV>On Oct 7, 2007, at 5:50 AM, Jay E. Krauss Jr wrote:</DIV><BR class="Apple-interchange-newline"><BLOCKQUOTE type="cite"><P style="margin: 0.0px 0.0px 0.0px 0.0px"><SPAN class="Apple-converted-space"><SPAN class="Apple-converted-tab"> </SPAN></SPAN><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">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.</FONT></P> <P style="margin: 0.0px 0.0px 0.0px 0.0px"><FONT face="Helvetica" size="3" style="font: 12.0px Helvetica">Jay E Krauss Jr</FONT></P> </BLOCKQUOTE></DIV><BR></DIV></BODY></HTML>