Did I miss something last year?
I had plugged in my laptop before going to bed one night to charge it. But I hadn't paid attention to the charge light. In the morning, I went to grab the laptop, and nearly burned myself. I saw the charger LEDs were flashing, indicating an error. The system got hot enough to actually deform part of the bottom magnesium alloy/plastic case (that happened to be facing up at the time). I thought for sure the thing had been fried, but once it was cooled down, it powered right up and worked fine.

Lesson learned, check the charge LEDs every time you plug in a customer returned laptop that you know has problems, but didn't complain since it was free.

And for the record, no, this wasn't my Powerbook that I have now. It was an older Armada M700, the same one that has been to multiple empeg meets now between CA, OH and CO.