I've had my n7 for a couple weeks now. I love it, other than the slight yellowing in one corner. But I've been noticing lately, as I go to wipe the smudges off my screen, there's spots all over it. Like from moisture. The first time I thought maybe I had a soda sitting too close and the little sprays from the bubbles popping might have gotten in it. But its happened again and again, while its been sitting in a dry place with no drinks near it. What looks like water spots, all over it, mostly on the top half. And they are very difficult to get off. Has anyone else experienced this? And should I be concerned? FYI, I have never had this issue with any of my phones either, and they sit right next to each other.