I've had my iPad 2 since September and just noticed today that the piece of plastic (?) between the glass and the aluminum chassis isn't completely adhered together. If I press my finger on the area there is a little bit of movement and there is an audible 'click' when I remove my finger. The area is question is about a half of an inch long. Does this warrant a device swap from Apple? It doesn't bother me, but I'm worried that if the device is completely sealed dust/moisture might find its way into my iPad.