me and my friends had this problem, too.

we were only able to play with 2 persons, the other 2 always got 'cd key server not responding' ALTHOUGH they applied krondike's lan patch correctly.

well, they simply copied the 'system' folder from me and voila, it worked even with 6 people! yeah, a 40-terrorist-hunt simply r00LZ on lan :D

Well look at that....my crack work more than just 2..... hehe I always test my crack before my releas...but I haven't test it more than 2 persion on the LAN server....at the same time...so great now I know that... :D