I wonder if that's a grokked bearing in the fan, and it only causes vibration sometimes. My old PC's cpu fan had this problem which made it noisy as all hell. I put a couple of 5p coins under the right hand front corner of the box and it eliminated the buzz. Obviously this isn't going to work on an iBook. I don't know what to suggest since the fan is not a user serviceable part - it's pretty easy to remove it, but you can't just ask Apple for a replacement part. Joe On Wednesday, May 7, 2003, at 02:50 Europe/London, Fran Dollinger wrote: > > On Sunday, May 4, 2003, at 04:35 AM, Jack Rodgers wrote: > >> On your keyboard, probably the F5 key, is an FKey with a speaker icon >> and 3 sound waves. Press that the next time you hear the whirring and >> see if the whirring stops. If so, then you have some extension or >> application that is generating a sound through the speakers. >> >> You can also press the F3 key, speaker icon with no sound wave, to >> reduce the speaker volume while the whirring sound occurs. If it now >> is lower in volume, see the above paragraph. >> >> If either or both of these tests prove positive, do a search while in >> the Finder, Command+F, for the word Sound and report what you find. > > Finally, did it again! I tried these suggestions and there was no > change. Also, I can feel air blowing out the back...so, it is the fan > as someone suspected. Another thing is that the A/C adapter is glowing > amber like it's recharging the batteries...only thing is, it has been > plugged in all day hence no battery usage....I had the following > open...Camino (thanks again, Kathe), iTunes playing some Celtic music, > SystemPreferences (because I forgot to close it), Mail & Sherlock > (checking out the Movie thing...mine works fine, also). I'm thinking > that Apple should at least double the height of the the foot pads on > the iBook or include a set of stilts with them. > > Fran > > > ----------