Wii having controller production problems?

Apparently Sony is not the only company with rumored production problems (i.e. they've not started yet). "Wiimote" is having issues...?

Although the translations may not be 100% perfect, a quote on Kotaku stated:

The factory has received Wii controller's purchasing order and its sample, but is still stucked in testing phrase. From feedbacks of testers, currently the Wiimote and nunchuck still have a lot of small issues, such as buttons aren't sensitive, hard to press 2 buttons together, and even no response occasionally, and the current sample is easy to get damaged, using the controller in normal situation will produce some noise, etc. Entering Sept, if the above hardware problems cannot be fixed, it will directly affect Wii's selling strategy. Also, the factory has not received the Wii console from Nintendo yet, currently they are testing samples using a dedicated machine only for testing, which means after an up-to-standard sample is produced, it still needs to be sented back to Japan to be tested by Nintendo for the 2nd time.

Now, given that this is a translation it is common to have details "lost in translation." This is also not a public announcement from Nintendo themselves - but it does give cause for fear.

Again, not confirmed directly from Nintendo. Also, considering that not all products are stamped perfect out of a factory or any initial testing. It is not unusual to have things go bad at times and most companies account for that and accept it as reality. Nobody is perfect, but will it truely effect Nintendo's release schedule?