Battery life has been great for me on .451. I read somewhere recently where Meterberry was causing battery issues after installing .451. An uninstall and reinstall of Meterberry fixed the issue.
It seems to be a common thing for apps to become either corrupted or unstable through the upgrade process. Maybe this could be your issue? I would suggest trying process of elimination with your third party apps and see if one of them is the culprit..
Let's Go Pens !!!!!!
No matter how hard you push the envelope...It will always be stationery