Myrison,
As a matter of fact I have had sort of good customer service, all prior to posting here. The tech rep that I was working with gave me some things to try, all of which made little sense in fixing the problem. After playing the audio cd's through a different receiver and not noticing the "pops" the tech said they would replace the receiver. I have an AVR 347 (lacking true hd/ dts master audio and not able to switch 1080p, only hdmi 1.2) so I thought I'd see if they would upgrade to the newer 354 (new codecs and hdmi 1.3) and he said "no problem,,,,but I'm out of stock until Nov." I could have him generate a RMA, but I'd be out my rig for 2 months, so I am putting up with the annoying 'pops' during the silence between tracks for hopes of a better, more capable receiver.
It's ironic because I partly got an HK due to posts on this forum and in hindsight I wish I had went Denon.