I've had the exact same problem. I have Poser on two machines: At work - P3 1Ghz, 256 megs RAM, Win98 SE, Pro pack, and this machine does exactly the same thing you mention. At home - AMD Athlon XP 1700, 768 megs RAM, Windows XP, Pro pack, and it NEVER has this problem. I had assumed that it was either the OS or the fact that my work computer has less processing "muscle" than my home PC, but the computer you're using is pretty close to my home PC, so that pretty much rules that out. Conclusion: In the year 2002, do you really want to be using a 4 year old OS? Time to upgrade.