I have a Sager notebook running Ubuntu 6.10 and windows vista. I primarily use the computer at my desk so it is plugged in about 75% of the time. I recently discovered that when I unplug the power cord, the computer dies instantly. This happens even though it says the battery is 100% charged. I assume that this is a problem with the battery, but I would rather not spend the $100+ if it's another issue. Anyone know what's up?