This afternoon the following happened to my PowerBook. I'm in the office, close the lid, check the pulsing light is on and go out to lunch. Upon my return I found that the light was off and when I opened the lid nothing happened. I also noted that it was rather hot, which surprised me as normally it cools down while in sleep mode. The only way out was to press and hold down the power button, which then triggered a normal startup. My temperature gauge confirmed that it was running at 50.5c which is the sort of temperature it gets to when I am working on it normally. To double check everything was back to normal I closed the lid again, checked the pulsing light was on and then left it for an hour, (working on my office PC unfortunately). When I came back to it, the light was still on and it fired up fine on opening the lid. The temperature had also dropped down to 40c. I've had the machine for about a month with no problems so this issue was quite a surprise. The only thing I can think of was that yesterday for the first time I commuted back home from the office with the PBook in sleep mode rather than shutdown, which I used to do and I also came into work this morning with it in sleep mode, so its been up and running since yesterday morning. I'm now going to go back to limiting sleep mode when in the office or at home and shutting down when commuting to see if that removes this new issue. Does anyone have any ideas? Is this normal?