Reuters
Deals
 - Ciena takes Nortel unit auction to 2nd day: sources
 - GE-Vivendi talks over NBC Universal stalled: report
 - Time Warner, News Corp reported interested in MGM
 - Rio's Cloud Peak down in debut, others fare better
 - Porsche board okays merger contract with Volkswagen
 - Hospitality company Centerplate to buy Boston Culinary
 - P&G repurchasing shares, quiet on potential deals
 - Rothschild star, Buffett banker circle Cadbury
 - Ferrero, Hershey weigh Cadbury split - source
 - Terra shareholders elect CF nominees to board
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