For fixing the map vault, I had to do a heavy change on the network protocol.
Than can lead to some problems as the previous version of the lobby will be unable to communicate with the server anymore.
I've made a function to detect these old versions so should receive the update, but in case it doesn't happens, download that file and overwrite the one in your install (c:\Forged Alliance Forever...) directory :
http://88.191.143.136/faforever/faLobby.lib