Well, I think I may have broken a record by killing two rpi's in two days!
I switched to having the rpi power the 3.3v logic on my board, and fried the pi's 3.3v regulator

On the upside, I did get it hashing for a while before I shorted killed the rpi - and I can probably replace the regulator and reanimate it...
So, which is the best S/W to use with Bitfury chips - chainminer or the cgminer fork?
Cheers.