iPod Photo carries the audio defect from regular 4G iPods

iPod Photo manifests audio defect (iPodlounge)

Seems like this audio problem is present in all the 4G iPods - regular, Photo and may be U2 (this is not confirmed yet). Though iPodlounge people reported this to Apple and submitted the defective units, why Apple hasn't confirmed this yet and didn't fix it is anybody's guess. Rio was quick to respond to Carbon's audio defect. Apple should seriously fix this issue since iPod has become the biggest revenue source for them and they can't afford to loose this ground.