According to PCGames, and translation from GoNintendo, some problems have arisen in one of the Wii's production plants for the Wiimote controller and nunchuck component.
The website reports that in a factory the team visited, a production staff mentioned that mass production of Wii-related products has been a complicated and difficult task. There are a range of problems, from buttons being less responsive then they should, strange noises from within the controllers and others being easy to damage. The factory is testing samples and is working with Nintendo of Japan to further test the devices.
If these issues can't be resolved soon then there could be significant problems with Nintendo's launch, with a delay or potential hardware shortages. Whether the issue applies to other factories in production is unknown, but with the problems being button and casing issues, there seems to be a good chance of progress resuming soon.
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