When it comes to paychecks, Wall Street's law of gravity is back in full force: What goes down must come back up. In 2010, total compensation and benefits at publicly traded Wall Street banks and securities firms hit a record of $135 billion, according to an analysis by The Wall Street Journal. The total is up 5.7% from $128 billion in combined compensation and benefits by the same companies in 2009. At 25 large financial firms that have reported full-year results, revenue rose to $417 billion, another all-time high. Things are shifting back to where they were before," said J. Robert Brown, a law professor at the University of Denver who studies compensation and corporate-governance issues. Buried in the numbers, though, are signs of how Wall Street's pay culture is bending in response to pressure from regulators and shareholders. Last year, deferred compensation made up as much as half of total pay, up from about a third previously, estimates Alan Johnson, managing director of Johnson Associates Inc., a New York pay consultant. Banks and securities firms are deferring a larger percentage of compensation than they used to, trying to counter criticism that yearly cash bonuses encourage unwise risk-taking by executives, traders and other employees aiming for a big payday.