I have a HR20-700, that over all has worked pretty good. Lately I have been having trouble when it records. If I am recording a 30 minute program it might stop recording after 20 minutes or less. Sometimes it will record just fine. Now get this the only channel that I have this problem with is HGTV HD. The program is House Hunters. I have never had this problem on any other channel. Is anybody else having this same problem? Anybody have any ideas? Thanks