I had the famous "clock" not setting problem with my media box, so got it swapped. The original box was made May 2004 and the swap-out Jan 2004. The clock problem was fixed but now I have a new problem... When the plasma has been on for awhile it just randomly switches off and the media box "on" LED flashes green 8 times, pauses for one count, and then repeats this pattern forever. Turning the media box off and on cured the problem for a week but now the problem is back. I don't think it is an overheating problem; the media box and plasma are well ventilated and the problem occurs even when starting from cold. Has anyone experienced this problem and can tell me what is causing it? I think I need to get the box swapped yet again.