I notice some interesting waves in the last few years of the data in the graph at the end of the preprint, and they don't look like noise:
>LANL Preprint: http://xxx.lanl.gov/abs/gr-qc/9808081
I any event, could it simply be that the distribution of dust/dark matter/gas molecules in the vicinity of the sun and particularly in the plane of the ecliptic is significantly different than believed? Perhaps the total estimated density of dark matter is correct, but it is not distributed as expected. I thinking of drag on the probe. Is Pioneer 10 in the plane of the ecliptic?