I have three Premiers and a couple of old series 2 machines scattered through the house all connected via cat5. The oldest Premier (about a year or so) will suddenly revert back to calling itself that TSN number again. i go online to tivo and rename back and everything is good for a month or so and then reverts back the TSN number. all the others fine. all the machines are visible on the network and all of them have internet access. any clues on what's going here?