Leopard Sales Top 2 Million in First Weekend

Apple said Tuesday that it sold over two million copies of Mac OS X 10.5, known as Leopard, on Friday when the operating system went on sale and over the weekend. That tally makes Leopard the most successful Mac OS release - at least if looking only at the first weekend.

Available for $129 individually and $199 for a five-user license, Leopard introduces over 300 new features, according to Apple, and the reviews have been overwhelmingly positive. Most critics say it's faster and easier to use than Windows Vista thanks to additions like Time Machine for backups and a single retail version compared to Vista's four.