Index: template.php
===================================================================
RCS file: /cvs/drupal/contributions/themes/blueprint/template.php,v
retrieving revision 1.15.2.1.2.12
diff -u -p -r1.15.2.1.2.12 template.php
--- template.php	8 Dec 2008 14:08:15 -0000	1.15.2.1.2.12
+++ template.php	12 Dec 2008 20:36:35 -0000
@@ -147,7 +147,7 @@ function phptemplate_preprocess_comment(
     $vars['title'] = '';
   }
   // if user has no picture, add in a filler
-  if ($vars['comment']->picture == '') {
+  if (empty($vars['comment']->picture)) {
     $vars['picture'] = '<div class="no-picture">&nbsp;</div>';
   }
 
Index: comment.tpl.php
===================================================================
RCS file: /cvs/drupal/contributions/themes/blueprint/comment.tpl.php,v
retrieving revision 1.5.2.1.2.3
diff -u -p -r1.5.2.1.2.3 comment.tpl.php
--- comment.tpl.php	8 Sep 2008 02:17:57 -0000	1.5.2.1.2.3
+++ comment.tpl.php	12 Dec 2008 20:36:35 -0000
@@ -1,4 +1,4 @@
-<div class="clear-block comment<?php print ($comment->new) ? ' comment-new' : ''; print($comment->status == COMMENT_NOT_PUBLISHED) ? ' comment-unpublished' : ''; if (isset($author_comment)) print ' author'; print ' '. $zebra; ?>">
+<div class="clear-block comment<?php print ($comment->new) ? ' comment-new' : ''; print(isset($comment->status) && $comment->status == COMMENT_NOT_PUBLISHED) ? ' comment-unpublished' : ''; if (isset($author_comment)) print ' author'; print ' '. $zebra; ?>">
 
   <div class="picture span-3">
     <?php print $picture ?>