Nintendo can't produce enough Gamecubes Wiis

Perrin Kaplan says shortages will continue - Nintendo Wii Fanboy

This is annoying. At least the 360 had newer parts that were harder to get. The Wii is just modified Gamecube, so getting a hold of parts shouldn't be an issue.

According to the above article, Nintendo is producing Wii's at maximum capacity. My question is, since Nintendo is still selling during the slower part of the year, when are they going to ramp up production? We should be able to easily find a Wii at this point.