Here’s the video, hope you like it!:
PHEW! , finally quite nice result of smoke (not perfect, but better than my another solution: http://blenderartists.org/forum/showthread.php?t=83619 ). I have tried to find nice solution for smoke past month. Thanks to jahka’s new particles! Kiitos jahka, jatka samaan malliin!
oh… almost forget… C&C please 
Wow, nice I like it.
Nice, you have some stepped motion there, do you have bezier interpolation turned on in particles?
Thanks for comments!
zanqdo: Yeah, there is a bit stepped motion but not maded without bezier interpolation. I have maded stepped motion by ipo curves using z-gravity and brownian force. Idea for having little bit stepped motion is faking roaming/rolling effect but not sure how well it will fake it :). Mayby there is too much stepped motion though .
Comments and ideas how to improve is always very welcome, thanks