Yeh it crashes on me sometimes.
I press ctrl alt escape then ctr alt delete and see if arma 2 is still responding while I surf the internet.
Then when I hear the sea I know its loaded up, or end the process if it says not responding.
Have you ran arma 2 yet?
I cudn't at first but then I ran steam as administrator and it worked.
Shutdown any uneeded programs avast makes it crash for me.
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