Ok, thus is quite weird... I left my iPod on my bed side table face down, i have an invisible shield on and a neotouch so the th screen never actually touches the surface. I just started using it now, and there is a dimple in the center of th sceen that wasn't ther before. Is the invisible shield, or is there a problem with my iPod. There is no problem with the touch screen, I typed this message on it.