I just got the new retina iPad mini yesterday and so far i'm liking it. But somehow whenever i use my mini for a few mins or so i'll start feeling a weird tingling sensation from the back of the mini. Not entirely sure how to explain it, but it feel likes very mild static on the back of the iPad mini. I was using it for about 1/2 hour, and my hands actually felt numb from it and find it unusable for long sessions (I'm 100% sure its not because of the weight). I've googled for similar experiences and people who felt it on their iPads (mostly iPad 2-4) usually only feel it when they are charging the iPad. My iPad mini was not charging. So i'm wondering if anyone else is experiencing the same problem with their retina mini? I'll be bringing it in to the apple store tomorrow to get it checked, only thing is i have no idea how to explain it to the geniuses.