The FDA decided to conduct this new investigation and release the subsequent report after a student, 17-year old Jay Thaker, conducted his own study of 100 pacemaker-using patients as part of a school science project and concluded that iPods did interfere with pacemakers. In his report, Thaker stated that iPods "can cause cardiac implantable pacemakers to malfunction by interfering with the electromagnetic equipment monitoring the heart."
Fortunately, at least according to the newly released FDA report, Thaker's conclusions appear to be unfounded. So, for those keeping score at home, that's a large, well-funded federal agency with lots of highly-trained and experienced medical personnel, one, 17-year old student with no experience or medical training of any kind, zero. I know, try to contain your surprise. You may now go back to blissfully enjoying your iPods.