Actually, it was my only question is whether anyone has ever seen this problem...
But to answer your question:
Sorry, my Problem ist, that i had test the Linux-OS (Mint) as a newcomer... Therefore, I have too little experience with Linux. So i not have looked to the kern.log
I was just surprised that the already on Windows observed problem occurs under Linux: System hangs, because the box is frozen.
(please look also to my thread in the Windows area:
viewtopic.php?f=13&t=8827)
I had think, that my under Windows observed Problem is a Problem of Windows. But the same Problem was also under Linux (that's only i missing under Linux: the Windows blue screen
)
I suspect that I had set the jumpers on the motherboard for the +5 V USB power wrong: permanent +5 V to "ON" instead to "OFF".
Setting the jumper to "Off" has once shown the success that the system is running now much more stable under Windows: For 3 days only once hung (blue screen).
Thereupon I checked again under Windows the power settings for the USB ports and all ports in question for this one "+5 V jumper" are set so that Windows can not shut down these ports, thus not saving energy on these ports.
Since then have passed two more days without a Crash. (i will observe it for the next time)
Because Linux is completely new territory for me, now I not know whether there are also energy-saving settings for the USB ports under linux and where i could set this settings.
If it turns out that under the current Windows settings the system is stabilize, so there are no more crashes, it could well be possible that switching off energy saving functions under Linux also leads to success.
But a problem will still remain: Should they hang the box once, the box must then manually disconnected for reset the box.