Anti-virus vendor McAfee is scrambling to contain the damage from a faulty definition update that incorrectly flagged hundreds of legitimate software programs as W95/CTX, a low-risk Windows 95 virus that was first detected in 2004.
The erroneous .DAT file (4715) was shipped late on March 10 with definitions for a wide range of new malware threats, but when the update was installed, it quarantined or deleted several widely deployed applications, including Microsoft Excel, Macromedia Flash Player, Adobe Update Manager and the Google Toolbar Installer.
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News Source:
eWeek 
McAfee Scrambles to Contain Virus Definition Gaffe 
