I've got about a 3 or 4 hour battery life on my laptop. I've had Ubuntu 11.04 on it for a week or so now, and yesterday, it started telling my I had a critically low battery (.3%), and suspends. When I plug it in and unplug it a few times, it stops complaining, and runs for hours. Is there a way I could fix this, or even just tell Ubuntu to ignore a critically low battery?