Ian,
Your release notes indicate you have tested the unix port on Macs, but they only partially support 64 bit processes. A 64 bit process can not access any frameworks, and even in Tiger can only use syslib. So, have you done something fancy they do not know about, or is it really a 64 bit clean, 32 bit VM, accessing a 64 bit image? Have you been able to allocate more than 2 gig of objects? Just wondering if working with the 64 bit VM buys me anything, since I have gotten the 32 bit one to build, but not the 64 bit unix one.
Michael