DrIstvaan: Nope, I don't have ROTT, even though I have been registered on CD Projekt Hungary for some time.
Madbrain: DrIstvaan, just out of curiosity have you been registered on CDproject Hungary with the same email address as here on GOG? Cause I have (on CDpCZ anyway) and I'm thinking that the same email might be the reason for getting the ROTT game for free.
No, I used a different e-mail address there. That may indeed be the cause.
But I doubt registering on the Hungarian site would reward me with a game reserved for .cz members, anyway.