My Powerbook is going to sleep on its own. I cant wake it up with the powerbutton or keypress. I have to close the lid then open it....and, if that doesnt work, I have to remove the battery and wait for the internal backup one to die out to reboot my powerbook. But the second it awakes from sleep, it goes back to sleep again. I'm running off battery power, but it is fully charged. Right now, it's fine (typing this post from it now) but it's been doing it all morning and am worried it will do it again. Thanks