When watching The Contender in DTS, there is an intermittent, high-pitched squeeking sound. It is in the upper frequency range, but annoying nevertheless. Switching to DD eliminates the squeeking, but I would rather listen to the DTS track. I've probably played 10-12 DTS tracks without ever encountering this noise. Has anyone else had this problem with The Contender or do I have some weird hardware issue?