Thanks in large part to the release of two public betas in a program that was limited to one million signups, the forthcoming OS X 10.10 Yosemite is now running on approximately 2.6 million Macs, thought to be around 3.3 percent of the worldwide Mac user base, according to statistics from Net Applications. The figures come statistics gathered in August, and are 33 times higher than the pre-release version of Mavericks, though of course the latter didn’t have a public beta component….