"Disconnected from server"

Hello,

I got an error which says "Disconnected from server". I don't know what is happening, every time that I am joining a battle, near 4~10th round, this error just appear. There is no much to talk about. Im playing GM 5 rounds to dont get that error

Can u guys heeeeeeelp me? xD

I already did so many things... Like reinstall, all mirrors etc.

I have win7, is it a problem? (I couldnt find a problem about win7~CF, thats why im asking...)

Thank You :]