I've found something that seems to fix any problems I've had.

[nedsnow]

Hi,

For the last month or more, I have had no problems with lock-ups, loss of HDMI, or any of the other things I've had. All I did was to make sure the IceBox was playing TV before switching my TV to another input, rather than leave it in the menus. This includes absences from home of two days and six days. It could be a fluke, but I've never gone this long without a problem before.

Ned