my Paperwhite arrived last week from Amazon uk. It had some blurry shadows at the bottom of the screen. However, I found the screen too bright for my eyesight. I turned the brightness down to 12. This is ideal for me. The screen background is grey but a much lighter grey than my Kindle 3. Also, at this setting, the shadows have disappeared. I found I could not get a suitable font size. The font being too large or too small with nothing in between. I solved this by putting books through Calibre using base font 13. Result, absolute perfection for me and I love my new Paperwhite.