Found some interesting tidbits, for what they are worth: http://www.whiterabbits.com/macnetjournal/December2003.html > Silent Night 1.1 fixes fan problems from OS X 10.3.2 > Monday, December 22, 2003, 9:33 AM > > Silent Night 1.1 is a 96k freeware application that restores the system > defaults that control the fan behavior on certain PowerBooks to the settings > found under Mac OS X 10.3.1. The result is that the fan that runs non-stop on > my 12-inch PowerBook G4 under Mac OS X 10.3.2 is no longer running full time > after applying this application's simple fix. It remains to be seen how Apple > will respond to the arrival of this application and whether it will be seen as > a threat to void the warrantee on your PowerBook. So far, it fixes my problem > and I can hear my music without sounding like I am in a wind tunnel. > Excellent! Well, crap. I can't find the other page. Someone BC'd me about the heat and fan issues, and whether it was an OS related thing. This suggests that maybe it is. JEL