Battery issues

The laptop I'm using seems to think that it's out of battery long before I actually am. Currently running linux - Ubuntu 6.04 (plus regular updates) - and the gnome battery meter keeps telling me about "Critical action" and that it will power-off when the battery becomes completely empty (I turned off the automatic suspend, as I still have about a half-hour of juice left and just have to put up with the annoying pop-up until it actually dies). I've tried the advice of friends and let it run down completely a few times, but it still seems confused. I really wish I could calibrate this to be a more accurate measurement of the time I have remaining.

Syndicated 2006-12-19 11:52:14 from keverets