i have found this... seem they have solution for it.. unfortunately it doesn't work on leopard or snow leopard.
Hope there is new code that will help me.
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The cause of the problem:
The Mac version of AA2.5 uses a server browsing system called SimpleMBS which has been down for a long time now, the army is no longer supporting it. The Windows and Linux versions use GameSpy which is why they don't have this problem.
The Solution:
I have, after many hours of hard work coded a server to replace the Army's simple MBS server.
To use this new server you will need to make a few changes to your Mac so that AA will look to my server for the list.
First open Applications, Then Utilitys, Then Terminal;
Once in the terminal Type;
Code:
sudo nano /etc/hosts
A text editor will open, move to the bottom of the document and add the following line of text;
Code:
77.108.133.251 simplembs.armygame.com
Now press [CTRL]+O then [ENTER] then [CTRL]+X
Now type into the console;
Code:
sudo niload -v -m hosts . < /etc/hosts
lookupd -flushcache
Thats It!
Now load up AA and click deployment, internet and you should have an upto date server list.