Booted from MM games

Ok, this is really putting a dampner on things.

Whenever I play a MM map, 50% of the time I get dropped from the server. I don't get kicked, I don't lag out, but the game stalls out and suddenly it flashes the error message "The server is full, please move to another server" for about 1/8th of a second and brings me back to the lobby.

Usually when I go to join again, the server is full 0.o... In that sense, someone joins the match and because it is full it kicks me out and accepts him.

Sometimes it will happen even before I join the match, I'll enter the server and BAM, booted because "The server is full" or "Dropped due to a host error".

I can play all day and night in the other modes, and I never have a problem.
Obviously the MM is buggy, please double check everything and repair the system.