I have a Comcast DVR cable box. My parents have Time-Warner and have never had a problem with their box, so I thought I'd get mine from the cable company and see how it works out. I've had it for about 4 months and I have to say, it's a complete rip off. It wouldn't be if it worked, but it doesn't. Since I got it, I've have the following problems:
(1) Change the channels and the sound cuts out.
(2) Turn on the TV and the sound won't work.
(3) DVR Playback locks up and freezes the box.
(4) DVR will not allow you to change channels when it is recording something (it should be able to as it's dual-tuner).
Most frustrating about this and what ultimately led to a stream of explicatives tonight was not being able to playback 24. I've spent over an hour and ten minutes trying to watch 40 minutes of TV. I have to start the program over and fast forward through the point where it froze and then start playback. Then, repeat. As it is, I'm sure I missed important points, because I had to fast forward over them and I can't see the last five minutes or so of the episode.
I called Comcast tonight and complained. I finally got through and talked to someone and was able to convince them to send someone out here to look at it. There are a lot of sites complaining about the Comcast box online (Google "Comcast DVR Freezes"). It seems Comcast has to be aware that this is a massive problem and continues to sell the box and push it onto consumers who have no idea that the product is flawed to the point of being unusable. This just looks like a class-action lawsuit waiting to happen. I'm not a big fan of class actions, but in a case like this where Comcast has a monopoly (I can't get satellite in my apartment and no other cable provider services my area) it seems like this might be the perfect opportunity to send them a message about treating your customers right.
The service tech is supposed to be out here between 8 AM and 11 AM on Saturday. We'll see if they show up and I'll update with a post about the resolution or lack there of based on my Internet research then.