While upgrading nfs-utils on my NFSv4 file server (F7 x86-64 2.6.23-rc3), I got an oops on the NFSv4 client (FC6 x86-64 2.6.23-rc3), and communications stopped. I rebooted the client, and everything was fine again. Then, on the server, I removed an extra nfs-utils package left over from FC6, causing the nfs daemons to be restarted. Another oops. So it seems like whatever Fedora does during an nfs-utils upgrade __on the server__ is causing a remote oops __on the client__. NFSv4 client kernel config also attached. Never seen this problem before, but then again, never did a remote OS upgrade of the fileserver while running NFSv4 before. Jeff