What does it take to create an outstanding leader? Apparently, not a Harvard MBA. Based on a study by Henry Mintzberg of 19 Harvard trained CEOs identified as superstars in 1990, ten were outright failures and another four are mediocre at best. Only five of the 19 seemed to be doing all right. This year alone, another 150,000 MBA's step into leadership positions in corporate America. How do MBA's become leaders we can trust?READ»