I made this scene to test hair dynamics. When I render, it seems that the hair is lagging behind the mesh, specially in frames between 60-70. The effect is also visible if I jump to a frame in that range, instead of going one by one from the beginning.
I tried baking, changing quality steps, cache steps, etc. I think the simulation is ok, because it works going frame by frame.
Here is the scene:
http://www.pasteall.org/blend/14461
Does this happen to you? any ideas?