I don't know if this will help, and I don't know if this is the same condition that other people with 3100 series units are seeing; but if it has any value to the software dev folks ....... here is what I see.....
If the box has been at idle for a period of time and you start to make button presses in the home screen, it appears that the box is performing a double ACK to either BT or IR signals (indicated by a double jump response to any button press and the strange doubled up "duh dunk" and "bloop" sound effect). If you try to navigate during this condition, the box will eventually lock up in the home screen; requiring a power recycle. I had speculated earlier that maybe the new software is handling remote REQ's differently. In any case ... for what it's worth, that's my two cents worth.
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