I have a problem that started occurring today. I am only using Sat input 1 and have nothing connected to 2. The HR20 keeps trying to switch tuners even though I only have one line connected. For example I left the tv on TNTHD and had a program scheduled to record on another channel and all it says on that channel is searching for satellite on Sat 2 and for some reason the HR20 just recorded TNT which had nothing to do with what it was scheduled to record. When I move the cable to Sat 2 then the channel comes on. Then next time the reverse happens it starts looking for Sat input 1 next time even though nothings connected. Now this started occurring when I added a 750GB eSATA HD today. So either that caused the problem or it's a coincidence. Something else to note is it appears that this only occurs on the HD channels although I haven't tested throughly enough to be 100% sure on that. Is there anyway to tell the receiver to only use one tuner and force it to stop trying to change tuners? I called Directv and they are sending me a replacement, but I'm not positive that will fix the problem if it's related to the addition of the eSATA HD. If anyone has any insight I would love to hear it. Thanks in advance.