I bought a Griffin charger today for the car. Bumper prevented the plug from fully seating. Apple Store refunded the price. The blue shirt guy said, notice how there are no iPhone4 cases on the display wall? It is because they will not present third party merchandise that does not conform to Apple standards. I figured, why do they stock the Griffin, but realized it is for iPods as well. Meanwhile, no one at Apple probably told the third party manufacturing community that Bumpers would be common on so many iPhone4s.