Cheers Smooth! It's an i7-4770, standard clocks and all, running 6 threads, above normal priority.

Frustrated with my earlier trouble with compiling on the original Windows box, I had a few more cracks at it, and finally sorted what the issue with compiling on that one as well. Suspecting that I had a broken boost setup, I rebuilt boost, then recompiled there, and presto, also got me working binaries. Happy camper. 

I'm not sure this needs correcting on the compilation instructions, could be my misunderstanding, but anyhow, that's how it worked for me - definitely the case on building boost 1.59 - not sure if it makes any difference on earlier versions, as the documented 1.57.

Where it reads:
b2 --toolset=msvc variant=release link=static threading=multi runtime-link=static address-model=64

I used instead:
b2 toolset=msvc variant=release link=static threading=multi runtime-link=static address-model=64