FYI - All of Direct TV's HR-20/21 model HDTV DVR receivers are defective. Customer service will lie and decive the user about this, but I found out the truth - ALL are unstable and contain program bugs.
The company is working on a downloadable software fix but NO date. They will do what they can to keep you from knowning this and will send you a remanufactured defective reciver. While you can ususally watch HD, you won't be able to record it. I called for weeks and was endlessly told to reset the box, got a replacement receiver, upconverters, endless tech instructions.
But it was all while DIRECT TV knew that ALL recivers were defective. They said "A new dowload was coming" and asked what time zone I was in and that it was coming soon. NO. There is no current download.
They have NO idea when there will be one.
Review about: Directv Receiver.