I just got back from getting my 6,000 mile service (tire rotation, oil change), and the service department told me that my front ball joints had already gone bad. This is completely covered under the factory warranty. I asked the service rep if it looked like something I had done while wheeling or if it was a factory deffect and he told me that they are starting to see a lot of these on JK's, so it's more than likely a factory defect.
Freedom has a taste that the protected shall never know
Colorado Jeep Club Member #115