When I play Street Fighter IV on Steam, I often get the window to deselect itself, I have to click on it to get the controler to work again. I get this unwanted deselection often on web browsers. When I am writting and this problem occurs, it stops and I have to click on the window. It's very pissing. Does anywone know what it is or what can I do? If an application deselects the window, how can I find it?