I've just lost a game vs a player with rating R: -2147482112. My raring was 2000 before this came. Other players' was between 1500 and 2000. I got +(very high number) rating for this game, but at the same time my rating decreased to -2147482112.
This is spreading!
After i've played the next match, this rating spreaded to the other players of the match.
Since then, if i lose or win, i get +-0 rating for every game i play, and rating stays at -2147482112 .