Mountain Lion mauls other OS X editions for top spot

Five months after its release, Apple’s Mountain Lion became the most widely-used version of OS X, a Web measurement firm said Tuesday.

According to California-based Net Applications, OS X 10.8, better known as Mountain Lion, accounted for 32%, or nearly a third, of all Macs that went online during December. That was an increase of nearly three percentage points from November, when Mountain Lion powered just over 29% of all Macs.