I have noticed that the volume of recorded shows fluctuates during playback. It's not the standard fluctuations one gets when commercials come on, it's during the program. The volume will spike and then get lower, etc. I know it's common for people to have a low playback volume, that's not really the problem, it's that the volume fluctuates frequently during playback. Has anyone else had this problem? I have no cable box, so it has nothing to do with cable box volume. I have series 2.