Timing issues (do not pull :p)

Not really a pull request, just a puzzeling question.

I explained on IRC as well, but this might be a more "long living" explanation.

The issue is that on our buildserver `t/fork.t` fails in random ways, with duplicate UUID's generated.

As I annotated in `t/fork.t`, `sleep 1`; fixes it, but it can't possibly be the right fix. This to me sounds like some sort of underlying problem?

(and sorry for the noise with two requests, messed up branch points on first one)