thank you for your respond and help..
i had this porblem, few days ago. it starts with message that cd jkey is not walid but only for one of nrns servers.. i change cd key, sometimes i have to reinstal bf2 hub but last night it didn't work.
i restarted pc and it didn't work util m,y system, colapsed for no reason and after that i was able to join the game..
what can be the problem?
thanks again