FILE - In this file photo from May 7 2012, Warren Buffett, chairman and CEO of Berkshire Hathaway, gestures in Omaha, Neb. Buffett is again auctioning off a private lunch, and the California charity that benefits is hoping the winning bid will top $2 million for the fifth year in a row. The proceeds of the 13th annual lunch auction go to the Glide Foundation, which provides social services to the poor and homeless in San Francisco. Bidding for the lunch on eBay will begin on June 3, 2012, and continue through June 8. (AP Photo/Nati Harnik, file)
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