Does your surface have an annoying noise like a click coming from upper right part of the screen?
it happens more in vertical tablet position and when you change app.
I saw also a video on YouTube
it's really annoying... at least with me... it freaks me out
I have it since 10 months. Since two months it is more insisting. I tried with compress air to clean it but maybe it's just a bit better.
I don't want to send it to Microsoft because I know it means more than one week...