Wirelessly posted (Mozilla/5.0 (iPhone; CPU iPhone OS 5_1 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9B179 Safari/7534.48.3) I don't know about anyone else yet but since the 5.1 update I have found my battery life to be significantly worse. Since taking off charge, 1hr 2mins ago and 40 mins usage - there is 83% of battery left. The phone has been using 3G but I have been mainly using it lightly, couple of iMessages, Twitter (5 mins), Facebook (5 mins) and checking my email. This would have taken maybe 5-7% on iOS 5.0.1 max. I can't believe it.