From a New York Times story:

He recalls vividly the days in early 2007 at Lehman when his financial models began to throw up more warnings showing delinquencies and defaults, and he remembers colleagues on his desk raising questions about loan quality.

But he said the firm’s ranking as the top loan originator on Wall Street, not to mention the pressures put on the desk by Lehman’s growth-obsessed leadership, made it difficult for even the most senior executives to raise questions, even a senior vice president like Mr. Linton.

He says he has no qualms about his work at Lehman or its economic aftereffects. “Anyone at our level who had a different view from senior management would find themselves going somewhere else quick,” he says. “You are not paid to rock the boat.”

Of course, the suits might tell the their side of the story differently.