I have a Cisco Explorer 8652HDC HD-DVR connect through my Onkyo SR602 receiver to my Sony Bravia TV using HDMI cables. I have a local cable service that my town provides. For some reason in the evenings the DVR is almost completely unresponsive. It takes multiple presses of the remote buttons (or buttons on the DVR itself) to access the cable guide, recorded shows, etc. Once in those interfaces, trying to scroll up or down results in the continuous scrolling which cannot be stopped for several seconds. Oddly, this issue never occurs during the day. Any thoughts on the cause? Is it related to passing the signal through my receiver?? I do not have this problem with my standard HD box. I have also had the DVR replaced once because of the same problem.