I'm not sure what is going on but the servers that are up are not showing in the server browser. I know the servers are up as they show up on Game-Monitor. Other people are having the same problem.
71.197.75.183:27016 SilentDeath's Socialist [FN]Server
208.86.251.30:27055 [C7G]C7Guild.com All_Levels[FN]
69.181.203.45:50663 [FN] Cyrez's 200fps Server
71.197.75.183:27017 [FN]Socialist Server
87.116.27.77:27017 [FN] Mikkel's Server - If you see this server FN is up.