The 2400c Powerbook seems to have shipped with a 36w AC adapter, but Apple's specs say use a 45w adapter. Which one do most of you Comet users use? I use the 36w myself; a OEM M5937 and a Duo 2300's M2693. Is there any truth that using too-powerful AC adapters can shorten battery life? That's kinda my reason for asking... Thanks, Craig W. Atlanta GA