Project Reality Forums

I have been playing PR for 3 months now and have not been able to use mumble whatsoever. I could not hear, talk, and I always saw the mic symbol with a red slash through it. I recently have tried to fix this and noticed that whenever I attempt to join a mumble server, it times out. I am able to link BF2 with mumble, and I am able to see lists of servers but I can never connect to a server. I have tweaked network settings to no avail and am wondering what could possibly be doing this?