Mac OS X 10.8.x, known as Mountain Lion and the current release of the operating system, has accounted for a majority share of the web traffic from Macs for the first time, according to new figures from web statistics firm Net Marketshare. The crowning comes just five months after the release of Mountain Lion, and took about half the time it took Lion (10.7) to take the lead position away from Snow Leopard (10.6) as the most popular version of OS X.