Apple (AAPL) today announced that it sold (or delivered in the case of maintenance agreements) over two million copies of Mac OS X Leopard since its release on Friday, far outpacing the first-weekend sales of Mac OS X Tiger, which was previously the most successful OS release in Apple’s history.

The PR people at Microsoft (MSFT) have not issued a press release saying whether they were worried about this hurting Vista sales.

Douglas A. McIntyre