This morning C1 stopped hashing, check the pictures. Please advice
Miner continued working without any maintenance... strange for me. If anyone had this problem please advice what should i do next time with this kind of problem.
If you see it again, reflash the SD card with the image in #2 of this thread. Looks SD card based.
Ps forum code uses square brackets, img and url:
[url=http://imgur.com/FhUtn2u][img]http://i.imgur.com/FhUtn2u.jpg[/img][/url]