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Hypergenteel media investor Alan Patricof has graced portfolio company Huffington Post with an op-ed. He is archly polite in his open letter to new Yahoo board member Carl Icahn. But his message is as subtle as a hammer to the head: Icahn is in deep trouble. Hamstrung by Sarbanes-Oxley regulations and fiduciary duties to shareholders, the feisty corporate raider will have to behave impeccably, lest shareholders or regulators sue him. Yahoo CEO Jerry Yang laid a trap, and Icahn walked right in. Of course, Yang shouldn't laugh too hard — he's now trapped in a boardroom with Icahn. (Photo by Getty Images