In this version I have found a couple of things:
1. More than 22 tail segments makes it flip out on the end when a (only one) cat motion is applied.
2. More than 15 segments leaves the last few (up to 22) segments 'vibrating'.
It would seem that the segments more than 15 make the vibration get worse until you hit about 30 and then it reall gets weird.
It has happened on my computer and at the school (on all computers I have tried) so far. The help files up to 100 segments. I can't really get above 15 without encountering troubles. This is on preset rigs and homemade rigs. It will happen with just one pelvis and adding a tail. It will happen in both 'up axis'. Nothing seems to fix it.
Thanks,
Eric