I've seen that too with "Breaking Bad" but no other show, it's really weird. I always assumed it was just my machine though since noone else reported it.
I'm guessing you're using one of the latest SVN's too? I think it has something to do with some changes I made to the image handling process lately, some kind of bug must have crawled in.
I need to analyze the images in question and figure out what's different about them. Would be helpfull if you sent me your "Reaper" banners zipped up or something (can you figure out if its always the same banner?). But I don't have much time lately and I doubt I'll get to it before late next week.