Fox's lurid reality smash Temptation Island is showing some signs of weakness: Compared to the previous week's installment, Wednesday's episode was down 5 percent in total viewers and 8 percent among adults 18-49. Despite the ratings dip, Temptation still managed to attract 16.83 million viewers, second only to an original episode of NBC's The West Wing. (Among adults 18-49, however, it beat the Golden Globe- winning drama.) Meanwhile, NBC's Ed beat ABC's Who Wants to Be a Millionaire for the first time among adults 18-49.