Microsoft's Windows XP shed a large amount of usage share again last month as users continued to desert the decade-old operating system for Windows 7.
Windows XP lost 2.4 percentage points of share to post a December average of 46.5%, a new low for the aged OS in the tracking of Web metrics firm Net Applications. The month's fall nearly matched the record 2.5-point drop of October.
In the four months from September to December, XP jettisoned more than 11% of its share as of Sept. 1, falling by nearly six percentage points during the period.
The four months prior to that -- May through August -- XP lost only 3.4 points, or about 8.5% of the share it owned as of May 1.
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