Updates to ArmA 2 have been released. The updates will be applied automatically when your Steam client is restarted. The specific changes include:
ArmA 2- Mouse controls: Improved mouse handling and responsivness
 
- Stability: Fixed CTD caused by Voice Over Net when many players were speaking simultaneously and other stability problems
 
- Sound: Fixed speed of sould simulation and other improvements
 Multiplayer: fixed scoring, multiple mission parameters added and various other MP-related improvements
 
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