Yesterday my MRV system was installed. A few questions: 1. I was expecting an HR24-500, but received instead an HR24-100. What's the difference? Same larger hard drive? 2. After the installation, I started playing around with the system. First discovery. When FF'ing, it take a few seconds to take off, AND, if FF'ing something from a different receiver, there's pixilation or some type of distortion during the FF'ing. Is this normal? (Not that anyone cares, but ...) 3. I don't know why but I thought when you hit the RECORD button it asks you which receiver to record to. Mine doesn't. You can only watch what's on each receivers LIST. This isn't any different than my old wireless setup. 4. The biggest issue is last night (after the install), I Rewound live TV to view something, then, when I hit PLAY, it would play for about 2 seconds then FREEZE and my audio was totally gone. This also happened on recordings. Reset and everything else didn't cure the problem. Called Direct TV. I was sure I had a bad HR24-100. Another service call scheduled for tomorrow morning. Then, I changed the HDMI cable and all the problems went away. Does the HR24 take a better HDMI cable or could my cable (same one I used for my HR23) suddenly go bad? If anyone could comment on each of my questions I'd really appreciate it. On question #4, if this problem was somehow my HDMI cable, I'd really like to cancel tomorrow's appointment. As always, thanks in advance for the help.