Just over a week after Microsoft handed Windows 7 Release Candidate (RC) to the public, the new operating system's market share gains have started to slow, according to data from Web metrics vendor Net Applications.

As of Thursday, Windows 7's overall share of the operating system user base was 0.39%, an increase of 18% over the same day the week before.

Microsoft delivered Windows 7 RC to the general public late on May 4, saying it would not limit the number of downloads and would make it available until at least the end of July.

Since its release, Windows 7 RC's market share crept up from 0.27% to finish the May 4 workweek at 0.36%, then jumped to 0.47% last Saturday and up again to 0.5% Sunday before slipping back to 0.39% Monday.

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