On 8/9/07, at 4:46 PM, Swanson, Andrew C. SWANSOAC at uwec.edu said: >I'm typing this on a Dual 800 MHz PowerPC G4. (Yes, G4) Don't even >remember how old it is. Think I bought it in 2000 (or was it 2001). I've >just learned this week that it is now obsolete. (The new version of >iMovie requires a G5, if I read the specs right.) I'll probably replace >it soon, though not for that reason.... It has started shutting off >randomly about once a week now. At first I wasn't sure, because >sometimes I would come back and it would be off instead of asleep. But >then one day I was actually typing along and "click" - gone! As long as >it's happening only about once a week, I can live with it - eventually.... I had a QuickSilver like yours and I think a problem like yours. Not long after I got it one of the processors had to be replaced. It was either that or something else (bad sensor?) that was causing the shutdown because excessive heat was registering. Tom Miller .................................................. "The only time we see the middle of the road is as we run from side to side." R.O.Clark ...................................................