I wanted to make you aware of an unfortunate incident that has resulted in the loss of all data on the Halo Wars Xbox LIVE Leaderboards. This includes all singleplayer, multiplayer and Trueskill leaderboards, as well as all matchmaking data, resulting in the Halo Wars leaderboards being reset to original launch day status.
This was human error related to Xbox LIVE servers. It is not a broader service issue and will not impact other titles or Xbox LIVE experiences. The Xbox LIVE team is investigating the cause to prevent this from occurring in the future.
Thank you to Robot Entertainment for working with us through this issue and thank you to our Halo Wars community for your patience as we’ve sorted this out. On behalf of everyone at Xbox LIVE, I’d like to apologize for the incident and any frustration Halo Wars players have experienced in having their statistics disappear from the Leaderboards. You can rest assured that we’re putting processes in place to prevent this from happening in the future.
http://majornelson.com/archive/2009/07/30/halo-wars-leaderboards.aspx
