Patch 1.7.1 (12 October 2012)

-Fixed a brutal bug that caused leaderboard scores to become infinitely low. This bug spread like a virus: everyone who played with or against someone who had it, got it as well, tainting almost 3% of the players in less than 24 hours. We think the bug has been fixed now, but the ranking of everyone who got infected has been reset... We are incredibly sorry for this!