Sounds like a bad production run? As it was mentioned maybe a transport or a drawer problem I've had mine for over six months and have had zero problems with it!
Denon DVD-2910 excessive vibration?
I was wondering if it is normal for the Denon 2910 to vibrate with authority? While playing CDs the vibration starts out strong on track 1 and then slowly diminishes with each track to nothing by the time the CD is over. I can't imagine the vibration is good for sound qualty.