Yes, I've had problems with the same channels, particularly ESPN HD channel 73, most recently was last night (Thursday 11/9/06). In fact, I had the identical problem last Thursday at just about the same time. No problems were evident between these dates. I've been in touch with Directv on the subject and on two occasions the problem was corrected within minutes after talking to them even though the supervisors I spoke to said there was nothing wrong at their end and they didn't do anything. I'm waiting now for a technician to come out and check things at my end. Signal strength has always been well above the minimum for good reception, different than your experience.