Recently my system (2 HR20's, one with an external 2TB HDD (usually around 50% full) and whole house viewing) has developed a long (up to one minute) wait. or "stall" for returning to my playlist after deleting a progaram from the playlist. The longer the deleted program, the longer the "stall". I have had this system for years, and this is a new situation. I recently deleted some programs that were 4.5 to 10 hours long and it took close to sixty seconds for the playlist to appear. Any thoughts??