I've been using Poser5 since SR2.1 came out, had minor lockups, or freezes, usually something stupid I did cause I was learning. 3 months, minor annoiances and the like. Started playing with animation , tut stuff from the manual, and it's crash city, lockups, freaky results. Now it could be me not knowing what I'm doing, but it 'seems' that lots of issues are with animation and poser5. I have Lightwave 7.5 so it's not a big deal that Poser5 is sort of broken to me, I just export.