Figures just in from Net Applications show that Microsoft's Windows 7, which only hit the shops last year now has 20 percent of the market and is officially doing much better than its predecessor, the extremely crap Vista.
The figures show that Windows 7's online usage was 20.9 percent in December, up 1.2 percentage points from the month before.
Some of the gains were at the expense of Vista which is currently on 12.1 per cent, its lowest share since July 2008. The best that Vista ever managed was a flaccid 18.8 per cent in October 2009.
Windows is now on nine out of ten machines and it has fallen slightly by half a point to 90.3 per cent during 2010.
The losses appear to be part of the trend towards mobile operating systems as gains are recorded for Apple's iOS, which boosted its share by three-tenths of a percentage point in December and Google's Android increased by one tenth of a point.
However, it does not seem that the slight boost in iOS has helped Apple's OSX which still seems to be in only one in twenty machines. Probably the same machines they were in last year.
Windows XP use fell the farthest during December, losing 1.2 points to end the year with a 56.7 per cent share. However, given that the OS is now as ancient as Spinola it is surprising that it did not lose even more market share during 2010.
The Imperium has been urging XP users to dump the aged OS for Windows 7 and it is expected that many companies will upgrade over the next two years.
It is expected that Windows 7 use will grow to about 44.7 percent of all computers before Windows 8 is introduced in 2012.