Apple has 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.

This figures outpaces the first-weekend sales of Mac OS X Tiger, which was previously the most successful OS release in Apple’s history.

Sales included copies sold at Apple’s retail stores, Apple Authorised Resellers, the online Apple Store, under maintenance agreements and bundled with new Mac computers.

"Early indications are that Leopard will be a huge hit with customers", said Steve Jobs, Apple’s CEO.

"Leopard’s innovative features are getting great reviews and making more people than ever think about switching to the Mac."