When i start the game everything works normally, but when i join a server, it says "agent error: agent not avalaible" ! And everyone just stand there, lagging, and when i read in the chatbox, i see people who get killed and so on...

Anyone know how i can fix it and play normally again?

I got the same problem:(

are you guys using International GunZ??

if you are then this is UBER normal..

No.. its ijji gunz >_<

ok i hav been told how to fix, ur mostlikely behind a router so wat u hav to do is open ports 6000-8000 on ur router and turn of firewalls sorry i couldnt be much more help