The waterpump problem I've heard of before...it happened to me on mine, but at 43k miles, which in my opinion is still way to early for a waterpump to go bad, but new off the lot, that's rediculous. When they replace the pump they are using an updated version, so apparently there was a problem with the originals. I know they used to be the same waterpump used on the 4.7L V-8, and the replacements aren't.
Hopefully you get that all straightened out and have no future problems with it. Mine's been great other than the waterpump issue I had, which was replaced under warranty at least.