Apple Inc. says over two million people have purchased a copy of Mac OS X Leopard, or OS 10.5, since its official release 6pm of October 26. The figure includes retail, reseller, online, new Mac sales, voluntary arrangements and agreements.

It’s shaping to be the fastest and hottest selling Apple OS so far, even surpassing Tiger sales.

And to mention an unmentionable, the over-6GB install is the hottest download on torrents and the net in the past 48 hours, making a large and incalculable leap over and above the 2M legal acquisitions. (You know who you are. Tsk. Tsk.)