[Mojary]

Based on what i've read over time in the forum regarding battery life, having push internet/mail on does help in draining the battery. And i'm guessing since you have you gmail/hotmail account set to push everytime you receive an email, that's the reason why your Active Data icon is always on display on your screen. The phone needs to be connected so it can download your gmail/hotmail messages as it arrives. why don't you just set it to check every two hours? And you need to check emails before that set time, you can always manually send/receive. From my experience, the more data my phone pulls in and the longer it is connected for data, the faster the battery drain.