Big Bad Sudoku Book 2.1.1 has been submitted and will be going live this week.  It mostly fixes several different crashing and hanging bugs:

• Fixed crashing under iOS 3.1.3.
• Fixed hanging/crashing about 10 seconds in (facebook check).
• Fixed crash when reporting 50th campaign score to game center.
• Fixed a few other problems that could cause occasional hanging.

Also the Game Center Leaderboard sort order is now fixed.  So all of your high scores should be now posting…

This fix is live now and does not require the update.  All you have to do to get all of your scores updated is complete any game and allow it to report the score to Game Center.  All of your accumulated points will post.