Microsoft's getting squeezed at the high end of the PC market by elegant Apple computers running OSX and at the lower end by less expensive desktops and netbooks running Linux.
The web metrics firm also said Internet Explorer's market share fell below 70 per cent for the first time in more than ten years, to 69.8 per cent. IE lost 1.5 points in November alone, dropping a total of 5.8 per cent market share so far in 2008, with one month still left to go.
Competing web browsers Mozilla Firefox and Apple Safari gained 0.8 per cent and 0.6 per cent market shares respectively during November alone, according to Net Applications. If those trends continue, Internet Explorer will fall beneath 60 per cent market share in 2009.