This is not the same old battery drain issue the Hero has always had. I have the GPS and WI-FI off and my battery is draining at an alarming rate. I have the advanced task killer installed from the marked and am using it regularly. I am going to settings "applications" and "running services" and turning off everything I can think that would be causing this. All of this started since yesterday when I got a message to install an OTA update. I did and since then I can almost watch my battery life disappear. Sprint Zone was modified in this update and I have even changed the settings so that all options were off except one. Nothing I have tried has helped. Any ideas would be appreciated.