> I was thinking about the problem and actually, at least in all
> circumstances I can think of, changing that one operation from <= to <
> would fix the problem.  If the times are on the same second, I would never
> have had time to change it.  This would fix the problem.  Perhaps this
> functionality can be controlled by an environment variable like NPROC.

i thought this idea might come up.  i think the reason not to do this
is a very fundamental principle: correctness.  never give up on correctness.