It's a general observation that comes from seeing many pcb's sat (usually) on carpets both here and Ebay, and people telling us they don't work properly.
In my work as an electrical/electronics Engineer working on trains in the UK, I managed to measurably reduce random failures on one fleet by instructing technicians in anti-static procedures.
Would you buy a pcb photographed on a towel ? Why spray a towel with anti-static juice when you could just sit the pcb on an anti static bag that it should be stored in if not fitted to the computer ?
This is getting off topic, I have no interest in flaming the owner of the board, but don't expect myself to be flamed for highlighting bad procedures.
Good luck with the FPU :-)
