On Wednesday McAfee released a routine update through their automatic update system that wreaked havoc on systems globally. According to reports at CNET "At 6 a.m. PDT Wednesday, the company released a faulty update to its antivirus software that hosed computers running Windows XP with Service Pack 3. The update, a DAT file, misidentified a key Windows file called svchost.exe as a virus, causing PCs to crash or keep rebooting. The problem affected customers worldwide, including chipmaker Intel, Rhode Island hospitals, Kentucky police, University of Michigan's medical school, and an Australian supermarket chain"
After the problem was known, McAfee issued a DAT fix to solve the problem on affected machines and removed the update as well. Running a small IT company here, I have already seen a few cases where this update has crippled PCs. As of yet, in my cases, the DAT fix that they had released has not solved any of the problems. It just goes to show that it's not just Microsoft who releases bad updates.
Source: http://news.cnet.com/8301-1009_3-20003247-83.html
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