Ahhhh, That may be it Ghost - as I was using "point at" for the eyes...That may make sense on why it does it only sometimes too - as I only sometimes use "point at"...

Thanks, I'll give it a whirl!!

Hmmm, The problem has stuck with me from my last PC to me new one. old PC had a 19" display with an nvidia 256m card. New PC has a 24" Widescreen with a 640m nvidia GEForce 880 GTS. I updated all drivers the day i got it (about 6 weeks ago), but this V4 jaw issue goes back past old PC since v4 was released.

Any other thoughts/ideas ?

About 6 weeks ago I went from:
3ghz P4
3gb mem
256m nvidia
XP

To:

Q6700 quad core
8gb mem
640m nvidia
Vista Ultimate 64bit

I could not be happier. The 64 bit lets me use all 8gb of memory and I'm able to do bucket sizes of 1024 now. My rendering is much faster than the old machine. I felt no real need to do the latest/greatest for Windows, but really wanted the 64bit and MS had done a lot of updating for 64bit between XP and Vista. I've had no driver or software errors yet. Only drawback to date are all the security features in Vista I had to turn off to get anything done, and I cannot load my Dragon Naturally Speaking on it because it cannot run in 64bit (yet).

I heard the next version of poser will be 64bit capable too so would expect renering to improve then again...