No Servers

[D645453456754]

Hi, I normally like playing Doom3 Last Man Standing 3.0 Multiplayer and i was already using steel security antivirus and firewall, but since last month all the servers has disappered and this has happened on my mates PC aswell and we are both using talktalk broadband but it has been working before because we were playing nearlly every day. But then about a month ago all the servers disapperered and even if me or my mate creates a server it doesnt apperer on the other persons PC.

Anyone know how to bring the servers back???