My mom has a R22-100 that she only uses for SD. She however keeps about 70% of what she watches on the HDD. Out of the 200 or so hours available in SD about 180 are used and half or more is locked. She is now down to 9% and less. She still records daily. The problem however is she had locked many many many, many programs. Today when a scheduled show aired the DVR automatically deleted only the other locked episodes of that title. Sunday Morning on CBS. Any other show is still present. She is wondering if the shows are set to lock why did it delete them. Also she is now down to 13% but when those 5 episodes (about 1hr 30 mins each) were deleted no space was regained. What is going on?