I am using the DCT6412 PVR from Comcast. It is connected to my TV via a DVI - HDMI cable for video. Audio goes from the PVR to my receiver via an optical cable, but there's no problem there. I am using a Harmony 880 remote, but I tried turning everything on with the standard Toshiba remote and I got the same effect. I currently do not ever turn off the cable box, as I don't know if it will record while in the "off" state and haven't bothered doing any testing otherwise.
Can anyone help me out?