I received the update 3 days ago and I have a huge decrease in battery life ever since. When I look at the battery usage, it appears the exchange server is taking up more than 50% of the battery, this was NEVER the case before. In fact most often exchange wasn't even listed as an app using any battery life. I have also noticed it is taking much larger to charge the battery. Last night it was averaging 15% increase in battery for every 30 minutes it was plugged, way worse than it was previously. I have done some reading/research and tried uninstalling and reinstalling email and of course the popular reboot. Any suggestion on what might have changed in my settings? I switched from the EVO because it had a terrible battery life. I was really enjoying not being connected to the wall, so this is very frustrating! Thanks!