I have the HR20 and the Harmony 670, and have not seen any of the problems you describe. Try resetting the HR20, if you have not already done so. I've had to do it several times. It is quite frankly not anywhere near as good as the Hughes DirectTivo, with the obvious exception of the HD. Others I've talked to that have had both units agree with me. It is a real shame Direct TV did not develop an HD DVR with Tivo.