Hello Bruce. I was a little bit early with my success report. I can now successfully mount the exports with sec=krb5 and can also read and write from linux clients. But now I get the following messages from the kernel on the server itself. This apparently happens when I try to read/write to the export. Aug 3 23:12:23 gibson kernel: RPC: AUTH_GSS upcall timed out. Aug 3 23:12:23 gibson kernel: Please check user daemon is running. Of course all the daemons on the server are running and the system seems to work fine otherwise. Kind regards, Michael -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html