That is a pretty big difference between massman and Ming@s in their 32m runs. I would not think that it would be that big with the NB only being 400MHz faster. I really didn't imagine the HT Link making any difference in Pi, however after looking at it again it may just be that since the ram speed of Ming@s is almost half of massman so that could be a big part. Roughly 2.5 minutes is pretty big though for roughly the same cpu clocks though.