Move the update check to when someone clicks on the multiplayer tab, instead of when they first load up the game. If there is anything copyright protection related in there it is moot since the pirates got around it. This will help reduce load on the servers, why have the server pinged every time the game starts if someone is only playing singleplayer?
Make sure to include some sort of check, to ensure that it only checks for an update the first time you click on multiplayer per game session, or you defeat the point of moving the check.