I'm going to have to agree with others in the thread stating Nintendo's stellar hardware duribility record. THey haven't had issues with consoles since the NES so I seriously doubt there is an issue here.
Also, considering the number of Wiis out there you would think this would be a bigger issue if it were a serious claim. Heck, Nintendo has nearly the same number of console as Microsoft has out there right now and there is hardly a mummur, but if you look at the 360....








