STOMP fixes the problem with Mihai Hair. It still takes awhile to render, but it doesn't hang up like it was, and it doesn't take 20 hours to render either. I don't know the link to STOMP though. Can't find anything in the search since the change over. Maybe someone else can give the link to where it can be downloaded.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi