My Keyboard started acting up a couple of days ago, like the others posted in this thread...I took mine in today to the Sprint store, and they gave me a new TP!!!!
fyi, I've had my TP since shortly after they came out, so I wasn't expecting a new one, but, voila!
The tech there said that they've had a lot of these come back for the same reason, so I'm wondering if they're trying to get rid of the old stock, in case it has to do with something other than just the keyboard itself.
Good luck!