By Gregg Keizer - Mar 13, 2006 03:51 PM

For over five hours Friday, McAfee's anti-virus software erroneously flagged hundreds of legitimate executables as a malicious virus, leading some customers to quarantine or delete the offending files and render applications such as Microsoft Excel inoperative.

An error in McAfee's daily virus definition file (dubbed "DAT") identified the files as W95/CTX, a virus first discovered in 2004. All editions of McAfee's on-demand-scanning products, including both the enterprise and consumer versions of VirusScan, were affected.


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