It hasn't been a good week for Dell. First, the company's quarterly earnings were off, and now its customer satisfaction numbers have plummeted as well. According to the latest University of Michigan American Customer Satisfaction Index, Dell's satisfaction numbers dropped by 6.3% to a level of 74 (out of 100). Of course, it could be worse. Dell's numbers are still better than HP (73), Gateway (72) and HP's Compaq brand (67). The leader? Apple, with a rating of 81 — though we assume those numbers would drop if the disgruntled customers caught in the $50 iBook riot were surveyed.