Nintendo's official Wi-Fi Service website reveals that people who purchase Mario Kart DS may be experiecing problems in multiplayer as the "Global Wi-Fi Service is experiencing intermittent problems." The problems are only for Mario Kart as the only other multiplayer enabled title Tony Hawk's American Sk8Land seems to have a clean bill of health. There seems to be no particular reason for the hiccups but Nintendo asks to maybe move location or turn of interfering devices such as wireless LAN, microwave ovens, cordless devices, computers.