Apple has announced that downloads of its latest operating system, Mac OS X Mountain Lion, have topped 3 million in only four days.
The milestone, Cupertino said in a press release, makes it the most successful OS X release in Apple's history.
"Just a year after the incredibly successful introduction of Lion, customers have downloaded Mountain Lion over three million times in just four days, making it our most successful release ever," Philip Schiller, Apple's senior vice president of Worldwide Marketing, said in a statement.
The announcement comes after Friday's data from Chitika, which found that Mountain Lion was already on 3.2 per cent of all Macs. According to the mobile ad firm, more than 45 per cent of Mac users are still using Mac OS X 10.6 Snow Leopard, about 13.56 per cent are running Mac OS X 10.5, while 2.75 per cent are fighting the good fight on Mac OS X 10.4.
Mountain Lion is available for £13.99 in the Mac App Store; anyone currently on 10.6.6 and up is eligible for an upgrade. Those who bought a Mac on June 11 or after can get a free Mountain Lion upgrade.
The revamped OS includes more than 200 new features, from iCloud integration to a new silent updating option known as Power Nap, as well as 1,700 new APIs. On the iCloud front, Mountain Lion will make it easier for users to sync documents between Macs and iOS devices.
Also, Apple's popular iMessage service has displaced the venerable iChat on Mountain Lion. The result is a cross-platform service that lets users on Macs, iPhones, and iPads chat with each other.