My MacBook Pro (unibody, 13'', 2009) used to restart fine after battery depletion. The computer would automatically save the state of the system and reboot to whatever I was doing before. For those not familiar, a grayed out version of the screen before battery depletion shows up on reboot with a gray/white progress bar thing at the bottom.
Now I get some odd behavior. Battery runs out, I plug it in and leave it charging, then reboot. When I do, a grayed out screen with my old windows open shows up, but the progress bar stops halfway through.
Anyone know what's happening or how to fix it?