There are a bug with minecraft (here i have used the 1.6. pre-release, but i have had the bug in the 1.5.2 version). When I have open the application, the text was bugged (escuse me for the english : i am french) (look screenshot).
I have relance the app, but the text stays always bugged.
I hope that the bug was fix in the release because it appear in the text of the play.
Thank you and thanks for minecraft, the best play.