Amazon is having some trouble. Maybe they didn’t count on Oprah selling so many units. Maybe they just are really bad at stock management. Whatever the case, shipping on the Kindle ebook reader is currently listed as 11 to 13 weeks time, completely overshooting Christmas and making deliveries at some point in Q1 2009. This will be the second year in a row that the retailer could not meet demand. Last year, with the device being new, Amazon could at least use the excuse that they were ramping up production.

It was back in October that Oprah Winfrey endorsed the Kindle. Amazon is also rumored to be preparing the Kindle’s replacement, which was once expected to be on the market this holiday season, but now it is expected to be delayed until Q1 2009.

Wii Fit is set to become the fastest selling Wii game ever. It’s outdone all previous records on Play.com by selling out its entire allocation in just one day. Wii Fit will be launching in the UK on April 25 and according to Play.com they have been “overwhelmed” by demand for the new game that isn’t really a game, but rather a fitness aid.

When it debuted in Japan 4 months ago, the exergame sold more than a million copies in the first month. That’s in a nation with around five million Wiis in use, so that’s nothing to sneeze at. Play.com is expecting to get more in stock before launch. It seems that people really do want to get healthy. Well, as long as there’s a Wii involved at any rate.