More than a year after doomsday reports hinted that the Conficker worm would bring down the Internet, one-in-10 Windows PCs still have not been patched to plug the hole the worm wriggles through, new data shows.

And 25 of every 1,000 systems are currently infected with the worm.

According to Qualys, a security risk and compliance management provider, about 10% of the hundreds of thousands of Windows systems it monitors for customers have not yet applied Microsoft 's MS08-067 security update. MS08-067, an out-of-band release that shipped in October 2008, patched a bug in the service Windows uses to connect to file and print servers.

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