Hi, I noticed at the top part of the iPod touch (e.g. the upper black bit) I have a small round white circle. The circle is only visible under strong light such as direct flourescent tubes or halogens. It's a small white circle but it leads me to think its a bubble because its off center horizontally but central vertically between the top of the iPod and the screen. I cannot get a successful photo of it due to the difficulty of viewing the blemish. So why Do I Care? I like my things in as good a condition as possible, but ever since a pixel died but then came back to life 1 month later I've been a bit, hmmm. Stuck pixels eh. One thing I hate, is the return of goods to Apple to receive a refurb, until they decided that my 5th Gen's iPod battery had not degraded enough to warrant a replacement. However quick to inform me it had unfortunately sustained a drop in a repair centair. Came back with scratched screen. I prefer the Apple Store because I'd get a brand new replacement rather than some crappily abused refurbishment. However the store is 20 miles away on England's most busiest motorway which would take me 2 hours there, 2 hours back, so I don't want to waste my time. So I'm asking, do you guys see this mark too? And curiously, what sensor is it?