[How old is the typical SC2-Player....]

65 years old, Male, Illinois, USA. Also Hooked on AH Gettyburg in the 60's. Do not plan to grow up.

[Average CM addict, married, 25+ years old?]

I'm 59, an accountant, married 36 yrs to a wonderful woman, have two dogs, and have been playing wargames since avalon hill's tactics II and Gettysburg.

[Gold Demo Problem]

same thing happen to me, until I set the graphic resolution to 800x600. now every thing is fine. great game.