I don't want to start a fight or drama. I am new to smartphones and have only had my Eris for 4 days. I downloaded the advanced app killer my first day using it because it was recommended. My battery drained in record speed and died within 3 hours. Trust me I tried all the tricks on here for improving battery life. Today I uninstalled the app killer and my phone's awake time went from 80% to 8% and my phone is at 98% battery life after 3 hours off the charger. I am now a believer. I have also turned off the 3g network for the most time and set WiFi to never turn off. All of this is making a big difference. Thanks everybody!