The only problem I had, was on this past Sunday, that my HR-44 lost Internet com, and ended up ditching the Deca, and going direct to the HR-44 with a Ethernet line, and using a OpenDNS IP as the DNS server, vs. the gateway IP for the U-Verse RG. Have not had any problems after that.
Now if they can only fix the issue with the Dolby Digital, that it does not work, when turning it on, and then going from a tv or soundbar for sound output, then turning on a Surround Sound receiver for Surround sound, you lose all audio feed, and have to either swap the input on the AV Receiver to something else and back to the DVR to get DD back, or shutting down the equipment and turning it back on to get DD.