Less than 30 percent of PCs run Windows Vista

We all know that Windows Vista has been a flop, despite Microsoft's claims. Even Microsoft's Vista deployment statistics are suspect, as the company counts every new PC sale as a Vista sale, even in enterprises with site licenses that allow them to run any version of Windows, a practice undertaken at many businesses, as InfoWorld and others have noted. But how suspect? Thanks to real-world PC usage data from the exo.performance.network, we now know.

As it turns out, two years after Vista's release not even 30 percent of PCs actually run it. And those that do are almost exclusively the Home Premium version, meaning that Vista is employed mainly by home users who likely got Vista preinstalled on a new PC..