I've had my HR20-700 since December 2006 (IIRC) and sometimes when I 6 sec replay live TV or watch a recorded show, the audio drops out for anywhere from 0.5 secs to maybe 2~3 secs and then comes back. This appears to happen randomly. If it happens and I hit PAUSE and then PLAY again, the audio comes back. The video does not drop out. I can hear the HDD churning as well when this audio dropout happens. I would imagine that this is an indication that the HDD in my HR20-700 is on its last leg. 1. Would it make more sense to add an eSATA HDD? This would effectively erase everything saved on the internal drive, correct? AND parallel drives (one internal and one external) are not currently supported by D*. OR 2. Call D* and try to get a replacement (I'd probably end up getting an HR22 or later as these are the newer HD DVRs). I'd have to sign up for the Protection Package. I'd also have to get the AM21 OTA tuner for $50 more. OR 3. Obtain a leased HR2x via Amazon (around $199) or other vendor and send back the HR20-700 to D*. I'd again also have to get the AM21 OTA tuner for $50 more. Ideas or suggestions? Is it possible to replace the internal HDD? I know these are leased units and since my unit may be near the end of its serviceable life anyway, am I really voiding a warranty by opening it up and replacing the HDD? I've built numerous computers, so replacing a HDD would be very easy for me to do.