Hi, It seems that the following part of the known issues at http://www.openafs.org/macos.html can be removed, as it's fixed in the 1.4.7 release: 64 bit userspace binaries cannot currently be run in AFS (fixed by the darwin-uio-64-20071023 delta). Maybe the mmap bit can also be removed, but my test program doesn't use that so I don't know. Jonas