Hey fellow pioneers oweners, I just got the pioneer 5080 and hooked up my comcast hd box using hdmi cables. I was not sure if it was my plasma or not but when watching USA HD and Discovery HD I would get some stutter. All the HD channels seem to work fine, so is it my plasma or the signal? Also when changing the channel from HD to SD cable it takes a about 2 seconds to switch. Is that normal? But please let me know about the stutter question. Thanks.