I have been going hog-wild removing apps since I rooted my Casio Commando. The last three things I removed have made a HUGE difference in power usage. My battery is normally down to 30 percent or less when I arrive home after a full work day(7:30AM to about 5:30PM).....without charging it since I grabbed the phone off the cradle in the morning. It is often less than 20 percent. I pulled it off the cradle at 7:30AM and it is now a bit after 10PM. The battery is at 52 percent. This is a huge improvement. No other changes have made a noticeable difference until now. I used the phone normally all day, and ran quite a few benchmarks throughout the day. Played a few rounds of Solitaire....as usual. I also noticed that "Android System" now accounts for a smaller percentage of power consumed since unplugged in the "Battery Use" tool in the "About phone" menu. Removal of the following seems to have improved my battery life: DRM Protected Storage PVMtpServiceStart 1.0 PVWmdrmService 1.0 I don't know if anyone else is interested in testing this but I would be interested in hearing the results!