I upgraded a Hughes SD-DVR40 with the Weaknees 160 GB upgrade. It worked great. Then, I upgraded my DirecTV service and began using a HD Tivo for primary viewing. I kept the disabled SD unit around because of 30 or so movies that had been recorded. Once every couple months, I would view a movie off of the SD unit. This past weekend, I looked at the menu of the SD Tivo, and all but 5 movies are gone. It has been just under a year since the install of the HD DirecTV Tivo. Of course, the SD unit was decommissioned at that time. However, as mentioned before, I would use it to view the volume of movies that I had recorded on the SD unit. Any ideas why the content of a Tivo not connected to any satellite or anything would disappear? I have taken the unit apart yet to see if the Weaknees add-on disc is still working or not. I am not sure if that would be the answer or not. I wanted to get some feedback here first. Thanks for any information or advice.