[CentOS] Centos 5.1 NFS problems

I know this is a centos forum but I suppose it would be appropriate to
ask a redhat question :-)

Is anyone aware of a NFS client/server problem with Redhat 5.1 where
the client/NFS do extra lookup() and getattr() calls? This is very
similar to CentOS' problem,
http://bugs.centos.org/view.php?id=2635


My question is, would upgrading the kernel help? or is this a userland issue?


TIA