So, my laptop (sony VAIO NS series - exact model number is PCG-7144M). I want to extend the battery life for as long as possible. I have already reduced the the brightness of the screen and i got around half an hour with that. But any other things that i can do? It also has vista, now many people claim that it is bogged down etc etc What could i disable or strip out of it to up the battery life, and also as another idea, would Ubuntu (maybe it being a lighter OS to use?) give more me battery life? All ideas welcome!