> The answer to memory limit is simple: We can't use more than 
> a gig just because Windows won't let us. If you review the 
> memory layout used by Windows you'll find that only 2GB are 
> available as user space to begin with. Inside that address 
> space we need to map both the executable, various portions of 
> memory allocated by the VM directly (buffers etc), some 
> Windows resources plus the actual Squeak object memory. And 
> since Squeak requires contiguous portions of memory the 
> chances of being able to allocate more than 1GB are very slim.
> 
> Cheers,
>    - Andreas

Thanks, just what I wanted to know.