I spent most of this afternoon fixing several of my early Amazon titles. Specifically, Silver Bullet, Starbleached and This Found Thing all have corrected (read as:FUNCTIONAL) tables of content and metadata and so on.
Amazon should give you the option of updating the files you currently have. I will let you guys know the second my copies fix themselves.
It's just a little FYI so your books will be a little cleaner and easier to read. (Especially Silver Bullet. It ought to actually work now)