Microsoft's OneCare has had a rough start in the antivirus market, with a recent poor showing in an AV shootout. If that wasn't bad enough, the engine component of OneCare was ironically the first serious remote code execution vulnerability in Windows Vista, though Trend Micro beat them to the punch as a third-party vendor.
If that wasn't bad enough, Scott M. Fulton III of BetaNews is reporting that OneCare is deleting Microsoft Outlook user files! With security guards like that, who needs malware?
It seems that this issue has been known since late January, and Microsoft only issued an official response yesterday, according to Fulton. Microsoft won't have a patch until March 13th, and users are supposed to manually put in file exclusions for their PST files in the meantime. For something as important as a user's entire e-mail database and all their contact information, some urgency would seem to be in order. If Microsoft can patch a DRM crack in 3 days, it should certainly be able to patch this problem in less than a week, much less a month.