Apple reported yesterday a 38 percent jump in revenue and a 31 percent gain in profit in its fiscal third quarter. For the quarter that ended June 30, Apple said it had revenue of $7.5 billion, compared with $5.4 billion in the corresponding quarter last year. Profit was $1.1 billion, or $1.19 a share, compared with $818 million, or 92 cents, last year. Apple said it shipped 2.5 million Macintosh computers, up 41 percent from a year earlier. And the company saw a 12 percent jump in iPod sales, selling 11 million in the quarter. It sold 717,000 iPhones in the quarter, compared with 270,000 during the year-earlier period, which ended only two days after the iPhone first went on sale. ...