Misery at the Top: The rank-and-file aren’t the only ones scouting for better job opportunities. Executives also are increasingly dissatisfied, with a staggering 87 percent vowing to bolt their firms sometime in 2007. That’s according to a survey of executives by recruiting company ExecuNet in Norwalk, Connecticut, which polled more than 100 executives making an average salary of $192,000. Money isn’t a factor in their unhappiness. The lack of challenging work tops the list of reasons, with limited opportunities for career growth a close second.