weird... thats under 100mb its trying to allocate.

Reduce your swap file usage, if your using too much it can do weird loops and crash (i dont understand it, but its true ).

Ummmm, also your bsp depth, reduce it to 15 -20 that should help alot. And the obvious things of closing any extra applications,

One thing that may help, or may not at all, is to convert your textures to Block Ordered Textures, (google it, there are some conversion scripts around), but basically a BOT holds multiple versions of the same image and maya will load in the most appropriate one depending on your render space.