Tweaked the help message a bit (this is the end result of iterating on

the message in email between Mike, Ralph, Jeff).

Add this to CMR #3642 and #3643.

This commit was SVN r28662.

orte/runtime/help-orte-runtime.txt

@@ -43,15 +43,14 @@ a different location to be used (use -h to see the cmd line option), or
 simply let the system pick a default location.
 #
 [orte:session:dir:nopwname]
-Open MPI was unable to obtain the username in order to
+Open MPI was unable to obtain the username in order to create a path
-create a path for its required temporary directories. This
+for its required temporary directories.  This type of error is usually
-is usually caused by either the UID being removed from the
+caused by a transient failure of network-based authentication services
-passed file, or from use of network-based authentication
+(e.g., LDAP or NIS failure due to network congestion), but can also be
-service (e.g., NIS) on a large cluster that might suffer
+an indication of system misconfiguration.
-from congestion.
 
-Please consult your system administrator about these
+Please consult your system administrator about these issues and try
-conditions and try again.
+again.
 #
 [orte_nidmap:too_many_nodes]
 An error occurred while trying to pack the information about the job. More nodes