I have a loud thumping, or popping noise, coming from my Denon Subwoofer DSW-76. It seems as though it occurs during predictable times - in other words I can rewind video content and the popping can and will occur over and over again at the same time in respect to the video content.
I have also noticed that the thump (popping noise) occurs when the system is shut down and the subwoofer changes to standby.
a really big HDTV,
a really fast computer with blu-ray burner,
a really nice HD camcorder...
and no software to burn blu-ray