Greetings all, I got my surface pro yesterday and i'm really impressed and happy, however as the title suggests there is something I don't quite get. if the screen is moistened to clean with a microfibre cloth there are a few specks below the camera and a 4 inch streak along the bottom left of the screen, which is weird, i've buffed it and double cleaned it but the mark remains, the odd thing is though if the screen is dry it cannot be seen. Someone else mentioned having a coffee mug ring shape in the center of the screen and it's very much like that. Now I mention it for one to see if anyone else knows what it is and if I have a problem or how to remove it (I did suggest vinegar but I have none at the moment), and two should I return it if I only see it when cleaning, operation and use are all 100% as far as I can make out. Thoughts? Luke.