Later last night I found an old thread that discussed this problem...search on "rear" and you'll find it. Apparently the problem is running some CD's through the "natural" DSP mode, which is my default setting. Running music across the front's + sub only avoids the problem, and movies do fine in 5.1. Problem may have to do with a stereo -> 5.1 converter in the 1050, but the hardware part is a little over my head.
Dave
_________________________
dave