Hi Mark,
I am working on a G3 with 320MB of Ram and VW 8.51 has assigned 200 MB. From what you say I understand that with more than that memory, I could create more classes an symbols?. Please, this is important, otherwise I'll have to create several files for the same model.
One thing to mention is that in both situation I had that problem, I had DXF files from ACAD in a layer.
Thank you again
Martin