Graph nodes initially outside graph area

Usually, when I load a graph, the object in the graph start outside the graph, and are sometimes very slow to first enter the graph area, or, if the graph is crowded or unconnected (ie. lots of force outwards, little inwards), then the nodes don't make it onto the graph at all.

I think this would work much better if all the objects started near, or at the centre. probably at the centre, with some randomised jitter (say up to a hundred pixels in each direction?).