NEW YORK (AP) - A computer problem at an unidentified stock trader caused erroneous, exaggerated prices - some as high as $950 per share - to be posted to the Nasdaq Stock Market Friday morning for 1,680 different stocks, a spokeswoman for the Nasdaq said. The Nasdaq said it continued to review all trades between 9:19 a.m. and approximately 9:40 a.m., when the problem occurred. While the stocks affected represent more than half of the 3,200 companies listed on the Nasdaq, the vast majority of them were among the Nasdaq's most infrequently traded stocks. The problem has been corrected, Nasdaq...