Sometimes it helps, if you restart rf2 multiplayer frontend. Its worth to try several times, but multiplayer in rf2 is really great (if managed to find and join a server). Today I had some great races at flat6 and formula 2. Flat6 is awesome.
I have no doubt that rF2 is totally awesome as I raced many times myself.....I just cant join to any MP anymore lol
"I am able to join all servers which have no space in mod/server name and some servers with also space in names. I did try to find rule with spaces in mod/server names but wasn't able to find it. "