Updates to ARMA II have been released. The updates will be applied automatically when your Steam client is restarted.

ARMA II

• Numerous stability and peformance improvements
• Various multiplayer fixes and improvements
• Improved support for CPUs with 4 and more cores
• Larger file cache on systems with more RAM
• Sound improvements
• AI improvements

Source Updates to ARMA II have been released. The updates will be applied automatically when your Steam client is restarted.

ARMA II

• Numerous stability and peformance improvements
• Various multiplayer fixes and improvements
• Improved support for CPUs with 4 and more cores
• Larger file cache on systems with more RAM
• Sound improvements
• AI improvements

Source