The latest batch of Microsoft security updates seems to have failed the all important "first, do no harm" dictum of the healing arts. On Monday, the company acknowledged that its KB908531 security patch, which closed a critical security hole in Windows Explorer, was wreaking all sorts of havoc on some consumer desktops. Crashing applications, system hangs and loss of access to special folders were among the difficulties caused by the patch, which is proving such an annoyance that Microsoft is not only offering free phone support (866/727-7233), but new Windows software as well.

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