Index: wp-admin/options-permalink.php
===================================================================
--- wp-admin/options-permalink.php	(revision 13693)
+++ wp-admin/options-permalink.php	(working copy)
@@ -131,22 +131,26 @@
 	$usingpi = false;
 
 $wp_rewrite->flush_rules();
-?>
 
-<?php if (isset($_POST['submit'])) : ?>
+
+if (isset($_POST['submit'])) : ?>
 <div id="message" class="updated"><p><?php
-if ( $iis7_permalinks ) {
-	if ( $permalink_structure && ! $usingpi && ! $writable )
-		_e('You should update your web.config now');
-	else if ( $permalink_structure && ! $usingpi && $writable)
-		_e('Permalink structure updated. Remove write access on web.config file now!');
-	else
-		_e('Permalink structure updated');
+if ( ! is_multisite() ) {
+	if ( $iis7_permalinks ) {
+		if ( $permalink_structure && ! $usingpi && ! $writable )
+			_e('You should update your web.config now');
+		else if ( $permalink_structure && ! $usingpi && $writable )
+			_e('Permalink structure updated. Remove write access on web.config file now!');
+		else
+			_e('Permalink structure updated');
+	} else {
+		if ( $permalink_structure && ! $usingpi && ! $writable )
+			_e('You should update your .htaccess now.');
+		else
+			_e('Permalink structure updated.');
+	}
 } else {
-	if ( $permalink_structure && ! $usingpi && ! $writable )
-		_e('You should update your .htaccess now.');
-	else
-		_e('Permalink structure updated.');
+	_e('Permalink structure updated.');
 }
 ?>
 </p></div>