All servers show no one playing.

Fightmaster

I see about 12 servers in my server list and no one is playing on any of them, also i cant connect to any of them either.

Floodinator

So maybe no one plays maybe?
Take a look on this site:
<a href="http://play4dead.com/ns2/" target="_blank">http://play4dead.com/ns2/</a>
In the top right you can klick on the servers to see if they are on or not, and how many ppl are playing.