http://news.teamxbox.com/xbox/6830/LucasArts-Addressing-Battlefront-Online-Issues
I've always had to joing games through my friends list. Joining in optimatch never worked for me.
I explained this in another thread, but basically it boils down to people setting up servers for 16 people when their connection is suited for only 4. Upload speed is the key.
Server Browser and Join Problems
Servers may not always appear in the browser window. In addition, some people can't join servers that appear to have spaces but are actually full. We are currently working on a solution for this.
In the meantime, we suggest trying to refresh the server list if you're playing on the PS2 or PC. If you're using a Xbox, we suggest joining games through Quickmatch or through your Friends List.
I've always had to joing games through my friends list. Joining in optimatch never worked for me.
Lag on servers? For people hosting games on their home systems, the important thing to keep in mind is that game performance is most affected by your upstream bandwidth. This is the amount of data that you can send to the Internet. Most standard DSL connections are capable of sending only 128 kilobits upstream. Star Wars Battlefront needs to send at least 40kbps per client over the upstream connection. Therefore, on a standard DSL connection, you will only be able to host a game for 3 other players.
I explained this in another thread, but basically it boils down to people setting up servers for 16 people when their connection is suited for only 4. Upload speed is the key.