Cannot connect to server.

When i connect to a server i get a really long loading screen (about 10 minutes) and then i can see the map for a bit but I get booted from the server back onto the main menu loading screen with the Connection to server failed message. I have been having this problem since beta. I have been unable to connect to any server. Sometimes i can play the shooting range tutorial, but it doesn't always work. I have uploaded the launch. log . I have tried messing around with graphics settings, reinstalling, verifying cache but nothing seems to work.

Cannot connect to server.