About the animation glitch:
I noticed the same sticking-leg-out-kick-jump, and can sort of reproduce it by running (shift+up) or turning (left+up), from stand still (including no camera motion) in third person view. Timing a /screenshot is difficult, however taking the screen shot sometimes freezes the screen mid-jump, so a regular print screen is possible:
about arrow attack, this is what i have found:
Friends with linux versions have no trouble casting the spell so it seems to affect only the windows version.
You dont need to cast anything for the client to crash, if you are seeing somebody casting it, it crashes too! 
just happened to me right now.
Seems that the animation for the spell is wrong, not for the casting, the spell, it does not show the arrow but an increasing bright white light, AFAIR this animation belongs to another spell.
I am on windows, and having no problems blasting away rats with summon missile or energy arrow. The bright flashes may be a planned effect using the new CS particle system. I think it looks great
. Reasons I may not have problems are: I have not visited BD, have an intel graphics onboard thing, and use a day old CVS build (which may have the problem solved).
