Join game doesn't stop...

when i'm playing zombie mod black ops, its star searching the matches and when don't find any one he continue searching more games to join.
Others players when he doesn't find any game macthes they are host and with me doesn't work.

Can someone help me or its the game doing this?

its the matchmaking software, it just sucks... cuz bo has been developed for dedi servers...

Not just you, sometimes it happens to me. A fix would be just to press cancel and start again