I didn't mean to commit this :(

htdocs/theme/default/templates/header.tpl

@@ -8,7 +8,6 @@
             'wwwroot': '{$WWWROOT}'
         {literal}}{/literal};
         </script>
-        <script type="text/javascript" src="{$WWWROOT}js/firebug/firebug.js"></script>
 {foreach from=$JAVASCRIPT item=script}        <script type="text/javascript" src="{$script}"></script>
 {/foreach}
 {foreach from=$HEADERS item=header}        {$header}