I've noticed that the reported disk space for NFS mounted partitions is 
very broken under 2.6.9-[rc1, rc2, rc2-bk7].
"df -k" and "df -h" report wildly different stats between 2.6.6 and 
2.6.9*. See attached...
I don't know if this is the version of nfs mount or some other kernel 
interaction. It does not appear to
hurt anything (no crashes or panics :-).

berkley