Windows 8's usage uptake has slipped behind Vista's at the same point in its release, according to data from Net Applications.

From Computerworld:

According to Net Applications, Windows 8's online usage share through Dec. 22 was 1.6% of all Windows PCs, an uptick from 1.2% of November. Windows 8 publicly launched on Oct. 26.

At the same two-month mark in Vista's release timetable, that OS accounted for 2.2% of all Windows systems, double the month prior.

Net Applications measures operating system usage by recording the specific operating system and version used by the machines of visitors to approximately 40,000 sites it monitors for clients.

Windows 8's uptake falls behind Vista's pace