Index: modules/comment/comment.module
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.module,v
retrieving revision 1.913
diff -u -p -r1.913 comment.module
--- modules/comment/comment.module	7 Nov 2010 21:46:09 -0000	1.913
+++ modules/comment/comment.module	8 Nov 2010 04:06:46 -0000
@@ -1263,7 +1263,7 @@ function comment_node_insert($node) {
       ->fields(array(
         'nid' => $node->nid,
         'cid' => 0,
-        'last_comment_timestamp' => $node->changed,
+        'last_comment_timestamp' => $node->created,
         'last_comment_name' => NULL,
         'last_comment_uid' => $node->uid,
         'comment_count' => 0,
Index: modules/comment/comment.test
===================================================================
RCS file: /cvs/drupal/drupal/modules/comment/comment.test,v
retrieving revision 1.91
diff -u -p -r1.91 comment.test
--- modules/comment/comment.test	6 Nov 2010 11:15:10 -0000	1.91
+++ modules/comment/comment.test	8 Nov 2010 04:06:47 -0000
@@ -423,7 +423,7 @@ class CommentInterfaceTest extends Comme
     // Checks the new values of node comment statistics with comment #1.
     // The node needs to be reloaded with a node_load_multiple cache reset.
     $node = node_load($this->node->nid, NULL, TRUE);
-    $this->assertEqual($node->last_comment_timestamp, $comment_loaded->created, t('The value of node last_comment_timestamp is the comment #1 created date.'));
+    $this->assertEqual($node->last_comment_timestamp, $comment_loaded->changed, t('The value of node last_comment_timestamp is the comment #1 changed date.'));
     $this->assertEqual($node->last_comment_name, NULL, t('The value of node last_comment_name is NULL.'));
     $this->assertEqual($node->last_comment_uid, $this->web_user2->uid, t('The value of node last_comment_uid is the comment #1 uid.'));
     $this->assertEqual($node->comment_count, 1, t('The value of node comment_count is 1.'));
@@ -449,7 +449,7 @@ class CommentInterfaceTest extends Comme
     // ensure they haven't changed since the comment has not been moderated.
     // The node needs to be reloaded with a node_load_multiple cache reset.
     $node = node_load($this->node->nid, NULL, TRUE);
-    $this->assertEqual($node->last_comment_timestamp, $comment_loaded->created, t('The value of node last_comment_timestamp is still the comment #1 created date.'));
+    $this->assertEqual($node->last_comment_timestamp, $comment_loaded->changed, t('The value of node last_comment_timestamp is still the comment #1 changed date.'));
     $this->assertEqual($node->last_comment_name, NULL, t('The value of node last_comment_name is still NULL.'));
     $this->assertEqual($node->last_comment_uid, $this->web_user2->uid, t('The value of node last_comment_uid is still the comment #1 uid.'));
     $this->assertEqual($node->comment_count, 1, t('The value of node comment_count is still 1.'));
@@ -471,7 +471,7 @@ class CommentInterfaceTest extends Comme
     // Checks the new values of node comment statistics with comment #3.
     // The node needs to be reloaded with a node_load_multiple cache reset.
     $node = node_load($this->node->nid, NULL, TRUE);
-    $this->assertEqual($node->last_comment_timestamp, $comment_loaded->created, t('The value of node last_comment_timestamp is the comment #3 created date.'));
+    $this->assertEqual($node->last_comment_timestamp, $comment_loaded->changed, t('The value of node last_comment_timestamp is the comment #3 changed date.'));
     $this->assertEqual($node->last_comment_name, $comment_loaded->name, t('The value of node last_comment_name is the name of the anonymous user.'));
     $this->assertEqual($node->last_comment_uid, 0, t('The value of node last_comment_uid is zero.'));
     $this->assertEqual($node->comment_count, 2, t('The value of node comment_count is 2.'));