I've had this problem since june (worked perfectly before that), but only recently did I care to get it working on the s3. I get all the channels I subscribe to, including the hd channels, except for the premium channels. in my case, that's hbo, starz, and encore. when I try tuning to hbo, I get the cablecard screen, saying I need to call comcast. the message also says it considers the host to have only 1-way rf communication. the comcast (bay area) guy came out yesterday to replace my cable cards because that's what they thought were the problem. he basically swapped out the cards, called dispatch, and read her the host and data numbers. got the 161-4 message, and I got all the channels again minus premiums. so basically I was back to where I was before he showed up. then they mentioned that it's because of the hdmi cable, that it causes problems. huh?!? just to prove that wasn't the problem, I let them unplug the hdmi cable and directed him to a tv in the other room that had the component cables plugged in. no difference. they're going to report this back to their supervisor, and get back to me on how to fix this. maybe someone here has gone through this, and knows how it was fixed. I'm crossing my fingers. either way I'll report back with what I hear from comcast.