On Sun, Apr 6, 2008 at 5:41 PM, Pat Crowe <crowesnest at aapt.net.au> wrote: > My 2002 Quicksilver 933 has the par-for-the-course fan noise problem. > However, I have noticed that as long as room temperature stays below 20C, > the noise level is not that bad(?) but as the temperature rises, so does the > noise level. Could it be that the fans in this Quicksilver automatically > increase speed as things hot up? It's certainly possible that the fans are controlled by a thermal sensor, but I couldn't find any information about that. I did find some good articles on reducing fan noise in the Quicksilver, though. Start at this page and also check out the related links at the bottom of the page: http://www.xlr8yourmac.com/systems/quicksilver_noise/quieting_quicksilver_noise.html There are several fans in your Quicksilver. The first order of business is probably to figure out which fan(s) is making the most noise. -- Rich