Difference Engine: The woes of Windows 10

Print section UK Only Article:  standard article Fly Title:  Difference Engine Location:  LOS ANGELES DESPITE its having been available for 18 months, three out of four PC owners have not bothered to upgrade their computers to the latest version of Microsoft's operating system, Windows 10. More than 700m of the world's 1.5bn or so computers continue to run on Windows 7, a piece of software three generations old. A further 300m users have stuck with other versions--half of them stubbornly (and...