This update is available for nfs-utils.  With SL6.2 the first nfs-utils 
package posted had some glitches.  The process of getting the glitches 
resolved lead to much confusion and complication.  I've posted the 
nfs-utils security errata package from SL5.8 in the sl-testing repo 
before it is widely released.

Please test it before it is released as a security errata.

You can install this update for testing via the sl-testing repo on your 
SL5 system:
   yum --enablerepo=sl-testing update nfs-utils


Pat