of course there is no proof, but the sudden drop is very mysterious. To me it's pretty clear there is a supply issue at least to a certain extent. The Wii's week to week sales are strange and vary way too much. The ps3 sales are extremely predictable, and go through obvious patterns. For ps3 since launch there has been an obvious pattern of it sales slowing down at a reasonable rate until it hit 20,000. For Wii the sale are half of what they were 2 weeks ago, to me that's just strange.
currently playing: Skyward Sword, Mario Sunshine, Xenoblade Chronicles X