I thought my battery was dying much sooner...

Hundreds of iPhone customers are reporting shorter battery life after upgrading to the latest iPhone OS (3.1). Apple appears to have acknowledged the issue, as the company’s help desk is contacting some affected customers to diagnose the root of the problem.

 

In Apple’s support forums, nearly 500 posts complain about the iPhone’s shortened battery life after upgrading to iPhone OS 3.1. The AppleCare help desk is contacting some of these forum members with an 11-part questionnaire, according to The iPhone Blog.

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http://www.wired.com/gadgetlab/2009/09/iphone31-battery/