Originally Posted by liveoutloud91
I have a hypothesis that it may have something to do with the firmware version (3.1), as this problem was nonexisistent before that update, as far as I can tell.
It should also be noted that no modding, soft or hard, has been done to the Kindle.
You've cracked the screen - it's as simple as that. It has absolutely NOTHING to do with firmware. There is a thin layer of glass, called the "screen substrate", below the outer plastic screen. If you subject your Kindle to any kind of twisting or bending force, you WILL fracture this glass layer, and that's exactly what's happening here. If you're fracturing the screen substrate on a regular basis you REALLY need to treat your Kindle with more respect. This isn't covered by warranty - if it was any other supplier than Amazon you'd be buying a lot of new readers.