Howard, Check your memory as it nears lock up. P5 seems to go unstable (well goes even more unstable if that's poss.) when it starts to get near the 2GB limit. You've 1GB real memory, so how big is you virtual RAM? I keep my swap at 960MB to stay under 2GB total. Not sure if it helps. Poser does slow as it reaches the limited (?) 1.9GB (I do wish CL would move into the 21st century with it's programming methods), but my hope is that forcing it under 2GBs I can at least keep Win2K stable enough to try to help Poser through its designed-to-fail memory managment woes. Still hoping that CL have to rewrite memory management in the port to OSX - and that they then port it back to Windows... Otherwise, it's Poser 5 to the bit bucket!