If you are one of the millions (?) of poor souls (Diablo III players) wondering "why can't I log on to my local Battle.net server?" or "what the f**k is an 'error 37' or 'error 3003'?" then you need only look to Battle.net's various pages designed to keep you from losing your mind. First there's the server status page which tells you if the server in your region is up, down, or downright lost in the ether.