Index: modules/node/node.admin.inc
===================================================================
RCS file: /cvs/drupal/drupal/modules/node/node.admin.inc,v
retrieving revision 1.55
diff -u -p -r1.55 node.admin.inc
--- modules/node/node.admin.inc	28 Jun 2009 03:56:43 -0000	1.55
+++ modules/node/node.admin.inc	28 Jun 2009 09:53:44 -0000
@@ -33,7 +33,7 @@ function node_configure() {
     '#type' => 'select', '#title' => t('Length of trimmed posts'),
     '#default_value' => 600,
     '#options' => drupal_map_assoc(array(0, 200, 400, 600, 800, 1000, 1200, 1400, 1600, 1800, 2000), '_node_characters'),
-    '#description' => t("The maximum number of characters used in the trimmed version of a post. Drupal will use this setting to determine at which offset long posts should be trimmed. The trimmed version of a post is typically used as a teaser when displaying the post on the main page, in XML feeds, etc. To disable teasers, set to 'Unlimited' . Note that this setting will only affect new or updated content and will not affect existing teasers.")
+    '#description' => t("The maximum number of characters used in the trimmed version of a post. This setting will only affect new or updated content: existing posts keep their teaser length.")
   );
 
   $form['node_preview'] = array(