My powerbook (1.5GHz, OSX 10.4.8) has just unexpectedly gone to sleep twice (once straight after waking) while browsing the internet using Safari. I shut it down and rebooted it, and upon startup, I noticed the temperature for my trackpad was doing very strange things - see attachment. At the time of the sleepings, I was using my Bluetooth Mighty Mouse. It seemed the only way I could stop it from sleeping as soon as waking was to turn off the MM. The trackpad does not feel hot or anything to the touch and all other temp sensors are normal What's going on here? Is my PB about to die?