Index: wp-includes/pluggable.php
===================================================================
--- wp-includes/pluggable.php	(revision 6121)
+++ wp-includes/pluggable.php	(working copy)
@@ -541,13 +541,32 @@
 	$comment_author_domain = @gethostbyaddr($comment->comment_author_IP);
 	$comments_waiting = $wpdb->get_var("SELECT count(comment_ID) FROM $wpdb->comments WHERE comment_approved = '0'");
 
-	$notify_message  = sprintf( __('A new comment on the post #%1$s "%2$s" is waiting for your approval'), $post->ID, $post->post_title ) . "\r\n";
-	$notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
-	$notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
-	$notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n";
-	$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";
-	$notify_message .= sprintf( __('Whois  : http://ws.arin.net/cgi-bin/whois.pl?queryinput=%s'), $comment->comment_author_IP ) . "\r\n";
-	$notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
+	switch ($comment->comment_type)
+	{
+	case 'trackback' :
+		$notify_message  = sprintf( __('A new trackback on the post #%1$s "%2$s" is waiting for your approval'), $post->ID, $post->post_title ) . "\r\n";
+		$notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
+		$notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
+		$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";
+		$notify_message .= __('Excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
+		break;
+	case 'pingback' :
+		$notify_message  = sprintf( __('A new pingback on the post #%1$s "%2$s" is waiting for your approval'), $post->ID, $post->post_title ) . "\r\n";
+		$notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
+		$notify_message .= sprintf( __('Website : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
+		$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";
+		$notify_message .= __('Excerpt: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
+		break;
+	default : // 'comment'
+		$notify_message  = sprintf( __('A new comment on the post #%1$s "%2$s" is waiting for your approval'), $post->ID, $post->post_title ) . "\r\n";
+		$notify_message .= get_permalink($comment->comment_post_ID) . "\r\n\r\n";
+		$notify_message .= sprintf( __('Author : %1$s (IP: %2$s , %3$s)'), $comment->comment_author, $comment->comment_author_IP, $comment_author_domain ) . "\r\n";
+		$notify_message .= sprintf( __('E-mail : %s'), $comment->comment_author_email ) . "\r\n";
+		$notify_message .= sprintf( __('URL    : %s'), $comment->comment_author_url ) . "\r\n";
+		$notify_message .= sprintf( __('Whois  : http://ws.arin.net/cgi-bin/whois.pl?queryinput=%s'), $comment->comment_author_IP ) . "\r\n";
+		$notify_message .= __('Comment: ') . "\r\n" . $comment->comment_content . "\r\n\r\n";
+	}
+	
 	$notify_message .= sprintf( __('Approve it: %s'),  get_option('siteurl')."/wp-admin/comment.php?action=mac&c=$comment_id" ) . "\r\n";
 	$notify_message .= sprintf( __('Delete it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&c=$comment_id" ) . "\r\n";
 	$notify_message .= sprintf( __('Spam it: %s'), get_option('siteurl')."/wp-admin/comment.php?action=cdc&dt=spam&c=$comment_id" ) . "\r\n";