Page faults, page faults
What are you up to? 25,000 faces is not that big a file, relatively
speaking, and you must be using lots of textures, automatic
reflection maps, and raytraced shadows to get to 26 megs of
memory/swap used.
If I were you, just get the memory! The amount of time it will save
you on not only this project but all future ones is well worth the
investment now. The extra time you will spend either cleaning it up
or rendering will pay for the 16 megs two or three times on this
project alone!
Greg Pyros