Hey all, This is really quick, but its really pissing me off. My macbook 1.83 CD 1 GB ram has been running off battery lately and when the battery gets to about 25% (or around 50minutes remaining depending on settings) it will just shut off, no warning signs, no beeps, NOTHING. One minute i was working on some reports then next minute the screen is black and it had powered off. This has happened twice now. When i did my battery calibration it gave me a warning and went to sleep, but now all of a sudden its just shutting off. I am losing work, and hours of it! How can i fix this? I assume there is a setting i should change, but where? Thanks!