Edit: After half day, my wife’s Mac started having the same problem. I have then applied the solution that I found in the Apple
Apple Agree IOS 5.0.1 Does Not Fix All Battery Issues –
Apple has said that the fix for the battery issues , IOS 5.0.1 have not resolved the problem for a lot of devices. Apple said in a statement to AllThingsD.
“We continue to investigate a few remaining issues.”
We seen twitter light up with tweets from IOS 5 users saying the update did nothing for there battery life and also IOS5.0.1 was trending worldwide. As well as Twitter we also seen customers resort to the Apple support forums to complain about how fast there battery was still draining even after the update.