We posted yesterday about the possible battery drain issues that have been reported by iPhone 4S users. Apple has acknowledged a "small number of customers" are having this issue on iOS 5 devices. There were no clear answers on what the exact cause was, just that several bugs are causing the issue, related to autonomy of the device. Apparently this fix should arrive in a few weeks.
According to user chatter, some believe the location service is running when it shouldn't, while some think the notification system is to blame. There has been success by disabling iCloud and location services.
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