You may be on to something about the battery usage. I normally spend all my time in sold 3g and was getting awesome battery usage. Shortly after arriving at my other home I installed the GPS tweak and looking at my battery usage it went from great to poor. While my first inclination was to blame the tweak I also noticed that the phone can't seem to make up it's mind if it is on 3g or edge. Last time I was here we did not have 3g so I don't know if it is operational or not but standing in the same spot sometimes it is one and then the other. I'm beginning to wonder too it it is not this "hunting" that is eating the battery.