RPM's installed:
[root@glasya smooge]# rpm -qa | grep kernel
kernel-doc-2.2.5-2
kernel-2.2.5-2
kernelcfg-0.5-5
kernel-headers-2.2.5-2
kernel-source-2.2.5-2
[root@glasya smooge]# rpm -qa | grep autofs
autofs-3.1.3-1
[root@glasya smooge]# rpm -qa | grep nfs
knfsd-1.2-6
knfsd-clients-1.2-6

Error given on server side:

Apr  3 17:07:36 glasya insmod:
/lib/modules/2.2.5-2/fs/nfsd.o: unresolved symbol
 add_to_lookup_cache
Apr  3 17:07:36 glasya exportfs: smooge.example.com:/home:
Function not implemen
ted
Apr  3 17:07:36 glasya nfs: Shutting down NFS services:
succeeded
Apr  3 17:07:36 glasya mountd[446]: Caught signal 15,
un-registering and exiting
.
Apr  3 17:07:36 glasya nfs: rpc.mountd shutdown succeeded
Apr  3 17:07:36 glasya nfs: nfsd shutdown failed
Apr  3 17:07:37 glasya nfs: rpc.rquotad shutdown succeeded
Apr  3 17:07:37 glasya rpc.statd[424]: Caught signal 15,
un-registering and exit
ing.
Apr  3 17:07:38 glasya nfs: rpc.statd shutdown succeeded
Apr  3 17:07:40 glasya insmod:
/lib/modules/2.2.5-2/fs/nfsd.o: unresolved symbol
 add_to_lookup_cache