PASADENA, California (AP) -- The Camden family is disappearing from television in May strictly for financial reasons: the WB's top executive said Sunday that the network is losing $16 million this year on "7th Heaven." The family drama, the most popular program in the network's history, will end its run after 10 years. The decision seems irreversible despite an Internet campaign to save it, even though "7th Heaven" is still the WB's second highest-rated show after "Gilmore Girls." (The WB, like CNN, is a division of Time Warner.) Production costs tend to jump for television series as they get older,...