[TREmp77]

Mine has it too, right over the HTC Innovations logo. You can see the circle outline from the inside of the battery cover that presses on the battery itself. So the stuff is defininatly coming from the plastic part of the batter cover that covers the camera lens. (Where it says HTC 3.2 Mega Pixels) I think something is getting from our hands or something through the crevises into the hole, and onto the battery. What it is I have no freaking idea.