Apple's OS X 10. 8 Mountain Lion looks set to pass the adoption rate of the previous OS X — 10.7 Lion — in the next three weeks. It's a fairly impressive feat for a paid upgrade that is not especially friendly to older Intel-based Macs. Apple’s OS X 10.8 Mountain Lion was the operating system behind 10 percent of all Mac-based ad impressions, according to a report from advertising network Chitika. Mountain Lion reached 10.3 percent of impressions on August 27, which is a little over a month after its release. It took Apple three months to reach 14 percent adoption of OS X 10.7 Lion. How reliable is the data? As any statistician will tell you, the statistics are only as good as the sample size; Chitika Insights data sample included “hundreds of millions” of ad impressions – more than enough to paint a clear picture of the operating system situation for the average Internet-surfing Apple user.

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Mountain Lion Adoption Eclipses 10% Mark after First Month [Chitika Insights]