- Fixed typo: $block->title -> $block->subject. Spotted by Morbus.

themes/bluemarine/block.tpl.php

   <div class="block block-<?php print $block->module; ?>" id="block-<?php print $block->module; ?>-<?php print $block->delta; ?>">
-    <h2 class="title"><?php print $block->title; ?></h2>
+    <h2 class="title"><?php print $block->subject; ?></h2>
     <div class="content"><?php print $block->content; ?></div>
  </div>