The trustee liquidating MF Global Holdings broker-dealer unit asked a federal bankruptcy judge to authorize the distribution of another $2.1 billion to former commodities customers, roughly doubling the total payout to $4.1 billion.  James Giddens, the trustee for MF Global said the increased payout should restore at least two-thirds of U.S. segregated customer property pro rata to the former customers. The payout requires approval by U.S. Bankruptcy Judge Martin Glenn in Manhattan, who authorized two transfers this month. A hearing is set for December 9, court records show. Giddens said the latest transfer could take two to four weeks and would require help from the Chicago Mercantile Exchange and other derivative clearing organizations. MF Global filed for Chapter 11 protection on October 31 after the New York-based company revealed a $6.3 billion bet on European sovereign debt. That worried investors, credit rating agencies and trading partners, and spurred a liquidity shortfall. Giddens' has estimated that this shortfall could total $1.2 billion, and on Tuesday said the amount remains uncertain.  [Reuters 11/29/11]