key code authorisation

Ok, naiz, all of the sudden I get this "awayting for key code authorisation" msg @ cod4. I bought the game in the stores, so it's original, I've been playing for several months, and all of the sudden this shit happens. I've enabled the corrensponding ports in my router, I've checked for the newest patch for the game, I've tried the "verify" button at the key code screen, all doesn't work.

hellup plz, wanna palypaly!