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I'm in the Chicago area and my 3g/edge data has been busted since 2am. Just got to work and a coworker with an iPhone was complaining about the same thing. I hate AT&T.
 
Guess I'm a little late, but 3G data was down for me (even with full bars) at least from Princeton, NJ north to New Providence, NJ. Came back on at about 9:30 or so.
 
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