I bought the 5400 yesterday. Experiencing audio dropout when watching DVD. I timed it, can be every 2, 4, 8, 17 min. It looks very repetitive, like its resetting. It happens very fast, and you can almost not notice it in quite moments, but in more action scenes you definitely notice it, since the sub takes longer to kick in again (have it on auto signal detect.) I am running QED SR75 coax. LG DVD player. I am a novice (my first setup), but also not an idiot. The 5400 was on auto signal detect, I took it off now to see if it still has the problem. I only watched 2 Dolby DVDs (Matrix 2, and Fifth Element). Goiing to test it now with auto off, and DTS. Is it possible that I am doiing something wrong?