MF Global, the cash and derivatives broker, returned to profit in the April-June quarter, which is the first of its 2010 financial year.Net income totalled $9.06m, a significant improvement from the loss of $24.7m in the same period last year. Of the profit, $8.04m was paid in dividends, which resulted in a net income of $783,000 being applicable to common shareholders.The results are a big turnaround for the firm, which made a net loss of $97m in...