> There's a thought! I hadn't gone down that road....how long would you > think the fan should run? More than 15 minutes? The PowerBoook models have fans, but I believe even the more recent iBooks are still cooled by convection. (This is one reason you can't operate an iBook while the lid is closed, for example, and another reason the iBooks still use the G3 processor, which runs cooler than the G4.) This is why the situation you describe, if it's attributable to heat building up inside, could be a bigger problem waiting to happpen. BRIAN/bpearce at cloud9.net