We've entered an era in which at least a few people might return to the old practices of hiding money in mattresses or burying large amounts of cash in the backyard.  This almost seems like a safer bet than leaving everything riding along with the markets.  But Warren Buffett remains a "buy and hold" man. "I would never have a feeling that the Dow is going to go to 2,000 or 12,000 or 4,300 or 20,200," Buffett admitted in an interview ...