I have noticed a problem since I upgraded my Directv receiver to a DVR/Tivo unit. When I hook up the phone jack, I have a low buzz/hum in the line. I also get this with my other newer upgraded receiver (an RCA DRD435RH). I did not have this problem with my older RCA receivers (a 502 and 221). The buzz is not there when I hook up the old receivers but is on both of the new ones. (note..I had the installers back with a new DVR unit and it does the same thing). I also notice a slight buzz when I hook up my computer's modem to the phone jack (a 1 1/2 year old Sony Viao). When I disconnect everything from the receivers, then hook up the phone line, there is no noise. If I hook anything up (either sat antenna, power cord or A/V cables) the buzz is there. This has been interfering with my connection speed with my computer (which is dial-up) . When I un-hook both receivers, my speed is normal. When I hook either one or both to the phone line the connection speed drops by 1/3rd. When I hook up other phones, there is no problem, only AC equipment with phone jacks does this. I have traced all phone lines (the red/green,yellow/black type) and found no problems. All phone jacks in the house (4) have separate lines to each with a junction box at the point of entry into the house from the outside box. I have re-spliced the lines on the inside junction box. I have tried each line individually and they all will buzz. I tried a DSL filter to no avail. All lines are hooked in phase. I have also installed a second grounding rod to the the electrical system. The phone company said it is inside the house, not on their line. What gives? Is this some sort of ground loop or is the newer equipment that much more sensitive. Is there a way I can eliminate this noise? A big thank you to all who can help!