I just passed 1 month for DirecTV and since last week, changing channels has become very slow. Is this normal? I've tried both remotes (Harmony/DirecTV) and still slow. I have HD but no DVR, all my channels react the same way.....using channel number, last 4, last channel, etc. What will usually happen is i press the channel, then it will delay for 10-15 seconds, then the screen will go black for about 10-15 seconds, then it will be fine. Never had this problem on TWC, it was instant. Any ideas?