Just FYI aCRaSSiCauDa.  Apparently there is some bug with 2.0's query protocol where if you run a lot of mutators that are to be displayed it wont be able to be queried.  i.e. you see 9999 in your favorites even tough the server is up.

Some people are using MutatorLoader to fix this problem:

http://utforums.epicgames.com/showthread.php?t=662721

The sniper server should be in the server list now.  When I reinstalled I forgot the original username and password so you may have to go back into the Deathmatch or Team Deathmatch server list and readd it to your favorites.