cgminer is stopping work because one of the cores is too hot. I find that will happen if I haven't done a good job of mounting the heatsink; I'll see most of the chips sitting at 60-70 and one will shoot up to 100. The back and forth with cgminer is something we'll fix in a FW update, but the root cause is bad heatsink contact.
Will look into it but since reported temperature starts at 35 and go to 66 I don't think this is it... Unless we don't see highest temperature reported...
Is there a way to show all the chip temps? To show consistency of overheat?
Don't forget to cool the Mosfets. My core temp rose from 52c to 70c and hash rate went up from 32Gh to 37Gh (unfortunately the power draw goes up as well)