I installed DayZ a few days ago and it worked for about 5 hours,when I tried to play again the next day, I got kicked from the server with this message : "You were kicked off the game". So I reinstalled both Arma 2 and OA with all the mods and it worked again. So the next day I try to play again and I still get the same message. Note that this happens in every server , not just the one I played on.