I may have located one of the sources of the "Fast Data Access MMU Miss" problem. Unfortunately, I don't know enough about the environment to fix it. I modified my copy of silo-1.4.13 to print out where in second.b it was executing. The point where my systems die is line 1485 in main.c .../silo-1.4.13/second/main.c:1485 int len = *(unsigned int *)kernel_params; This line never completes. If anyone knows more about this or has a patch they'd like me to try, please let me know. It's probably not helpful, but my guess is that there's some kind of alignment problem. gregsparc@xxxxxxxxxxxx (also in #splack on freenode) -Greg - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html