Multiplayer game network problem

[Killer 11]

I have a network problem in 2.01 alpha

One computer is Amd athlon(or duron) 950mhz and the other is Itel celeron 2000 mhz

When we start a multiplayer game it runs wery smothly but after abou a minute it frozes and the pach says games disconnected becouse of a network problem.
i don't use any firewalls or p2p aplications that can take bandwith i have 100mbs lan so it's enough for the patch and both comps have enough speed to run the game so i think that this is a configuration problem ofcourse i have identical configurations on my comps but maybe some trigers must be disabled
Here's my configuration:

Ps:answear me very quickly becouse we want to play and my friend is right here next to me.

[SHADOW-XIII]

have you read this?
http://wiki.ttdpatch.net/tiki-index.php ... layerGames