Master Server issues
It would appear the master server is currently down, this can be checked here: http://dpmaster.deathmask.net/?game=tremulous&showplayers=1
If you've not already refreshed your client's server list, you shouldn't do so for the time being or you will lose the server list.
If you are unable to see our server on the list, you can do
in your client's console to join Trench.
Our live server status is below;
These issues are now resolved.