WTH and WTF! What did Crytek tested it on? Windows 95?
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You announce a DirectX 11 game, that is supported only in Windows Vista and Windows 7, a game that we all expected to be the next Crysis Armaggedon for our systems and videocards, a game for witch many of us upgraded their PCs (including me) (Windows 7 x64bit is the logical and first choice for an upgraded system; for 4GB RAM or more you need x64bit OS), and you do not test the game on the expected OS-es?
I can see very clear now that Einstein was right:
"Two things are infinite: the universe and stupidity".