Everything I have read about this has been dealing with the iPhone 4S.
From everything I have read its a battery issue, iOS5 update that was just released was "suppose" to fix the problem and it appears it hasn't. So how do you determine if its the OS or if its the a actual defect of the phone?
I'm seeing different than you. I'm seeing a lot of info regarding Apple is looking into fixing problems with iOS5 battery issues. NOT iPHone 4S battery issues.
But I could be wrong. Just sayin'