The Flat Earth Society has it all wrong, it's not the third rock from the Sun that is flat, but microprocessor chip sales. That's the conclusion reached by the International Data Corporation (IDC), a market research firm tasked with figuring such things out. According to IDC, worldwide PC processor shipments in the second quarter of 2011 dipped 2.9 percent compared to the first quarter and were downright flat compared to the same quarter one year ago, rising a measly 0.6 percent.