i let my clamshell 300mhz ibook go to 1% battery (it had a charge of 94% when i turned it on and let it run for a total of maybe 2 hours)and of course it went into sleep and wouldnt come out of it. i took the battery out and put it back in and immediately plugged it in and let it charge overnight. (at least 8 hours..) in the morning i turned it on while still plugged in and the menu bar meter said that the battery was only at 29%!??? since then i have left it plugged in for a total of 18 hours and it is only at 39% charge, what gives? could it be the yo-yo? or is the battery just shot? The ibook runs fine when plugged into the charger, so i tend not to believe the yo-yo is bad. any ideas??