Biz Break: Fun with iPhone 4S sales numbers; Wall Street plunges, Alibaba prepares cash for Yahoo

Today: Apple says it sold 4 million iPhone 4S units in first three days of availability, which is an incredible number. Plus: Stocks nose-dive, with Wells Fargo, Hewlett-Packard and BlackBerry maker taking big hits, and Alibaba CEO says company has money ready to buy Yahoo

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