What I get doesn't look like that at all. Towards the bottom of very long posts or spell lists, black lines appear across the screen, text is all jumbled and often with several lines on top of one another etc. Not sure how to post a pic of what it looks like however.
EDIT: LOL, of course, today it's not happening, even in long spell lists. Is there a laptop exorcist in the house?
Edited, Aug 12th 2013 8:47am by KEC