Anyone have a problem like this? When I fast forward through commercials, I find the unit is not responsive to commands to resume normal play speed. Both hitting the play button and hitting the 4th FF blink the blue light, but either aren't received or aren't recognized. I will hit it 5-10 times before it will catch. And then, of course, I need to use the 8 second back button many times to get back to the beginning of the segment. Very frustrating. I've tried replacing the battery and holding the remote high in the air. Suggestions?