iam guessing some eth miners have moved to Dcr. Sudden jump in global hash rate.
FPGA's are mining this now
@ocminer - do you know of any bitstreams for the Cairnsmore 1 units?
Not yet - IIRC it was not hard to "convert" the bitstream from ZTEX to CM1's (just some difference with the USB driver ..) but i've sold all my CM1's long time ago and haven't got the possibility to test/develop anything for them anymore.