Mine had this "curtain" effect on the right edge of the screen too, and a very slightly darker area in the top left corner. I should agree, as small nuisance as it be, it was surprisingly annoying when reading ebooks in FBReader, especially since it attempts to utilize every drop of screen estate and prints text with virtually no margins at all (by default, you can change it). The screen on my N800 looked exactly the same as on 770 in this respect. And I was really hoping this would be fixed in N800. Alas...