The Oct. 13, 2005, installment of Walt Mossberg's Personal Technology column in the Wall Street Journal was a detailed guide for people planning to buy personal computers in advance of Windows Vista's launch. One paragraph in particular got Microsoft's attention. "You also won’t have to worry about Vista if you buy one of Apple Computer’s Macintosh computers, which don’t run Windows," Mossberg wrote. "Every mainstream consumer doing typical tasks should consider the Mac. Its operating system, called Tiger, is better and much more secure than Windows XP, and already contains most of the key features promised for Vista."

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