Dark lines between lines of text
For people who are seeing this, and who may think they are seeing really bad ghosting, move yourself (and your Touch, LOL) to a place with better light. I have noticed that the banding effect is only visible under lighting conditions that are, in truth, pretty marginal for reading. When I am reading in good light, the banding disappears and the contrast between text and background is much better resulting in much better clarity.
Give it a try.
This is very different than the problem I am having with dark blocks occurring extending from the left margin. These do not disappear under good light.