You wrote (in your message from  26)
 > 
 > What would be _really_ nice is if X was able to actually return free()'d
 > data to the system.
 > 
 > Has anyone tried linking an X server against a malloc that uses mmap()
 > to allocate space, and munmap() to free it?
 
Well, the XFree86 3.2 servers are already doing that. It was
implemented last year by Pascal Haible. Look at
xc/programs/Xserver/os/xalloc.c.


					Matthieu