I have no idea what happened, but starting on Friday at 2 different times I turned my K3 on from sleep to find at least half the page being one big black square. The first time it took up the half of the lower part of the screen. The second time I took the picture below. I turned it off, then on again and it was still there. I was able to get rid of it by turning back a page and then going forward again. Is there something wrong with the book, or my kindle? I haven't run the book through Calibre yet and it hasn't happened since yesterday. Just want to know if anyone else has ever had this happen?
