I have a H2K with S440. Several times when I pressed the Red Button that displays the tuner status it will say Software update and Tuner 1 will not be useable. Or it has said Guide Update and two tuners are not available, usually 1 & 2. If I go to Yellow Button-->Network Setup-->Tests-->View counters I see the lost locks count on the corresponding tuners in the hundreds. Yesterday it was 240 on tuner one. You cannot use the affected tuner when this occurs. The only way to clear it is a Red Button reset. I had a situation where recordings were set to happen on these in use tuners and I had to do the reset to make them useable. I'm unable to even select the tuner from this screen. I have seen it stay this way for several hours and it never goes away unless I do a reset. Has any one seen this? I think its a bug in the SW. Could it be a hardware issue?