I have a related but different problem. I am using a dual-G5 1.8 Gig Mac with 1 gig of memory. It handles most things fine. However, when doing a big render, it runs out of memory. As far as I can tell, I cannot reallocate memory in System 10.3. When I go into System 9, which allows one to reallocate memory (normally), it will not allow me to reallocate memory for P5, so I am stuck with what I guess are the factory defaults or something (128 megs). Is there any way to crakn allocated memory up to 500 megs or so? Is there a way to reallocate memory in System 10, but Mac has (for whatever reason) hidden it? Any help from any Mac gurus would be appreciated.