Fiji's mahogany farms, believed to be the world's largest, have placed this remote archipelago at the center of a global business storm. What began as a bidding competition for timber rights between a U.S. company and a British firm has come to involve government officials from the two countries, as well as PricewaterhouseCoopers, a Seattle entrepreneur and a former timber executive named George Speight, who staged a coup against Fiji's government in May. Billions of dollars are at stake and lawsuits are flying from Suva to Seattle.