I own a Powerbook G4 1.5 ghz running 10.4.5. I have always had my processor usage set to "highest". Lately my usage has been pretty light, generally Folding is always running, Camino, sometimes Stickies/iTunes/Text edit. This morning, after my PB was charging all night, I had Finder, Camino, Folding and Stickies open. I was reading MR for all of 1 hour and 10 minutes when the "you are now using reserve power" or whatever came on. Is what I'm doing that "heavy"? Would just these apps suck down the battery that quick or is it safe to say my battery needs replacing? By the way, I HAD the processor on highest, the screen brightness on the very lowest setting, bluetooth off, airport on. It wasn't hooked up to anything external that may suck the juice out of it. Any insight would be greatly appreciated.