There have always been issues with using dynamic hair in Vue, for as long as it has been supported.
It uses a LOT of resources. A good head of hair will at the very least slow a system drastically, it not crash it. My first attempts were on an Athlon XP with 786Mb memory (don't laugh - back then, the system was, well, relatively powerful). It was unusable for dynamic hair. The next PC was an X2 4400 with 4Gb memory, kind of worked, but very slow. The hair did not render well - not because of shaders, the hair strands themselves were very thick. A suggested workaround at the time was to give the hair a bit of transparency, which improved the situation but slowed the renders down even more (and the responses to moving the camera). It crashed sometimes. I am now using a Core7 with 6Gb memory, it still doesn't (imo) work as advertised. This is a great pity, because dynamic hair offers a great alternative to transmapped hair (assuming one is prepared to spend a bit of time on the styling, draping and shaders) - can be much more realistic, not only in stills, but also animations.

@dadt: The problem has been reported to e-on, and acknowledged. However, it would probably help if you report the problem as well, just so that they know there are more than 1 or 2 users that would appreciate a solution.

• I also agree with you about Carrara's dynamic hair. Maybe e-on should consider a similar hair module (and grass, etc...). Now that would be a nice feature...

Rob