Nintendo has issued a statement about reported disc read errors for Smash Bros. Brawl discs in Japan. Japanese gamers have complained that the Wii is unable to read their newly bought disc, or of videos chopping up during playback. Nintendo have said that the problem has to do with dust and tobacco building up on Wii laser units. This is effecting Smash Bros. in particular because it uses a dual layer DVD, which is more sensitive to a dirty lens. Nintendo has said it will clean Wii units that are sent to them, free of charge.