LOS ANGELES -- The state Mental Health Department agreed to pay a Los Angeles hotel $877 million in 2005 to hold a two-day training conference, according to state records. $877 million? For a two-day conference? It's wrong -- not even close. The actual contract was $36,200 and the agency spent only about $21,000, invoices show. Inclusion of the dramatically higher amount in a vast computerized index of state contracts was an honest mistake, the result of a worker typing a billing code where the contract's value should have been listed, officials say. An attempted fix created a duplicate listing, leading...