I notice one of the most common threads on here is the battery life on phones.."why does it die so soon?", "is this normal?", "whats using up my battery?" I found an app (there's probably more like this") called watchdog lite. The app will let you know what app, system, etc is running on your phone, how much cpu/ram its running, and where its running (background, foreground. etc.). I would recommend this over a task killer, which kills the app, but potentially shuts down other programs of your phone. If its an app misbehaving or system issue, it will tell you.