1.133.1. RHBA-2010:0284: bug fix update
The nfs-utils package provides a daemon for the kernel NFS (Network File System) server and related tools, which provides better performance than the traditional Linux NFS server. This package also contains the mount.nfs, umount.nfs and showmount programs. Showmount queries the mount daemon on a remote host for information about the NFS server on the remote host. For example, showmount can display the clients which are mounted on that host.
All nfs-utils users should install this updated package, which addresses these issues.