[pghaworth]

A couple of fixes for the screen issue have been reported on the Amazon Kindle forum.

1) Restart NOT Factory Reset fixed one. If it were me I'd try both if I had the issue.
2)"I first tried the night light feature this morning by climbing in and out of a closet until I realized that smudge I kept trying to wipe off on the top left corner was the light sensor. I noticed as the light adjusted the screen yellowed from the top to about 1/2 way down. After playing with it for awhile by sitting in a brightly lit room and repeatedly covering the sensor until the entire screen darkened to a uniform color(yellowish), it now is uniformly light when I uncover the light sensor. Maybe this will work for those of you having a problem."

Hope this helps someone!