One of my dvrs (HR22) recorded the same show until the hard disk was filled tonight. Everything that was on this dvr prior to this show was recorded over. I did a reboot with no success as I expected. I deleted the show and sure enough the space now shows 100% free. I called PP and they said if it happened again that they would replace the DVR. I guess that is fair but I would really hate to have a lot of programs recorded again and have the dvr do this again. Has anyone else had this problem? Should I be concerned about this occurring again? I attached a picture if anyone wants to see it. It is actually my wife's dvr. The screen shot is from a different receiver using MRV so that is why it shows 43% free.