Please let this be just more bored reporters pulling stuff out of their ass... Because this would be a serious blow to my faith in Obama.
(I can't add anything to what Ezra said, so just follow the link.)
UPDATE: Seriously, I am not putting any stock in any of the rumors floating around about Obama's appointments. None are forthcoming, and if the campaign taught us anything, it's that the Obama team doesn't leak, and rarely fucks up. That said, Vilsack for Ag would piss me off.