When the first dual layer Wii game hit the market (Brawl) some peoples Wii refused to read the games disk. This was due to the fact that before Brawl, the Wii lens had never had to move to read a second layer as all games came in under the standard dual layer sizr (4GB). The solution was to send your Wii off to Nintendo, but no more as Nintendo Japan has released a Wii Lens Cleaning Kit which is on sale now. The kit costs 800 yen (just over $10AU), but a release outside Japan is not known at this point. We expect these kits to be sold from Nintendo directly if they ever head our way. Source: Nintendo JP