I recently purchased a combined DVD player and receiver unit home theater in a box. I set it up and began playing movies. But on some movies the screen freezes. It just stops playing and the only way to reset it is to take out the movie. I thought it might be a player problem so I took it back and exchanged it for another. Same problem. The movie froze in exactly the same place. Then I thought it must be the movie. So I took the movie back and replaced it with a new one. Result: Same problem in the exact same location. Can anyone tell me what might be causing this? Is it just that I bought a cheap player or what? Any info is welcome. Thanks.