Particle trails in Cycles? Is there a way to render trails behind particles in cycles?

I tried using hair particles with Use force field weights for growing enabled and a turbulence force-field, however the trails become unstable after a point:



Is there another way to do this?
You cannot do this with blender/cycles particles itself but you can use BTrace addon to create animated curves from traced particles:



The addon is still under development but it works very nicely.