I left my iBook on during the night with the FW HD attached to it. I have not set the energy setting to sleep for this Mac. For some reason, I turned off the electric power from that power outlet (there is a on/off switch for that in the hotel) without knowing about it. This morning, iBook was off with no battery power left. I thought it would go to sleep before the battery power is depleted. Also, the clock was reset to the original time (like 1960 or 1970, I forgot the exact year). So, PRAM was also reset. Do you know the reason for this to happen?