Does anyone know what one long beep (~2 seconds) followed by what seem to be 10 sleep light flashes means? My PowerBook has taken to doing that from time to time on boot. It has also re-started its "go to sleep at random and not wake up no matter what" routine. I've narrowed it down to what seems to be an emergency overtemp signal being sent, apparently caused by the touchpad sensor, which is registering completely impossible temperatures (-15C, 67C, 124C[!!!]) after a few hours of use from a cold boot. The only solution seems to be to remove the battery, unplug, reset PMU, and wait a few hours before rebooting it, which buys you an hour or two of uptime. Any ideas?