Intermittent "Access Denied" messages logging into the website

global $tp, $sql;
parse_str($parm);
$pm_file1 = e_PLUGIN."pm/pm_func.php";
include_once(is_readable($pm_file1) ? $pm_file1 : e_PLUGIN."pm/pm_func.php");
$pm_inbox = pm_getInfo("inbox"); // This will retrieve the pm_info array from pm_getInfo function

$new = intval($pm_inbox['inbox']['unread']); // new messages are passed in the array with 'new', not with 'unread'
if ( $new > 0 )
{
    $messageSpam = $new." ".($new == 1 ? "New message" : "New messages");
}

if (USER)
{
	if ($new > 0)
	{
	$ret = "  
	<script language='JavaScript'>
		jQuery(document).ready(function()
		{
			jQuery.sticky('<a href=".e_PLUGIN_ABS."pm/pm.php?inbox><b>You have $messageSpam</b></a>');
		});            
	</script>
	<div class='topnav'>
		&nbsp;<a href='".e_PLUGIN_ABS."pm/pm.php?inbox'>$messageSpam</a>
		&nbsp;<a href='".e_BASE."usersettings.php'>".X_THEME_16."</a> 
		&nbsp;<a href='".e_BASE."user.php?id.".USERID."'>".X_THEME_17."</a> 
		&nbsp;<a href='".e_BASE."index.php?logout'>".X_THEME_18."</a>
	</div>";
	}
	else
	{
	$ret = "
	<div class='topnav'>
        <a href='".e_PLUGIN_ABS."pm/pm.php?inbox'>Your messages</a>
		&nbsp;<a href='".e_BASE."usersettings.php'>".X_THEME_16."</a>
		&nbsp;<a href='".e_BASE."user.php?id.".USERID."'>".X_THEME_17."</a>
		&nbsp;<a href='".e_BASE."index.php?logout'>".X_THEME_18."</a> 
	</div>";
	}
} 
else
{
	$ret = "
	<div class='topnav'>
		<a href='".e_BASE."signup.php'>".X_THEME_9."</a>
		&nbsp;<a href='".e_BASE."login.php'>".X_THEME_10."</a>
	</div>";
}

if (ADMIN)
{
	$ret .= "
	<div class='topnav'>
		<a href='".e_ADMIN."admin.php'>".X_THEME_19."</a>
	</div>";
}

if (!USER && defined("LOGINMESSAGE") && LOGINMESSAGE != "")
{
    $ret = "
	<div class='topnav'>
		".X_THEME_20." <a href='".e_BASE."login.php'>".X_THEME_21."</a> 
		&nbsp;".X_THEME_22." <a href='".e_BASE."fpw.php'>".X_THEME_23."</a>
	</div>";
}
return $ret; 

<?php
/*
+ ----------------------------------------------------------------------------+
|     e107 website system
|
|     Copyright <img src='http://e107.org/e107_images/emotes/MSN_Crystal_Matte/cup.png' alt='' style='vertical-align:middle; border:0' />  2001-2002 Steve Dunstan (jalist@e107.org)
|     Copyright <img src='http://e107.org/e107_images/emotes/MSN_Crystal_Matte/cup.png' alt='' style='vertical-align:middle; border:0' />  2008-2010 e107 Inc (e107.org)
|
|
|     Released under the terms and conditions of the
|     GNU General Public License (http://gnu.org).
|
|     $URL: <a href="https://e107.svn.sourceforge.net/svnroot/e107/trunk/e107_0.7/e107_plugins/featurebox/templates/centered.php"  rel="external">[-link-]</a> $
|     $Revision: 11678 $
|     $Id: centered.php 11678 2010-08-22 00:43:45Z e107coders $
|     $Author: e107coders $
+----------------------------------------------------------------------------+
*/

if (!defined('e107_INIT')) { exit; }

$FB_TEMPLATE = "
<div>
<script type='text/javascript'>
	jQuery(function(){		   
    jQuery.easyNotification({
        text: '$fb_text',
        cookieName: 'VR6OCMembershipActive',
        cookieEnable: true,
        cookieDays: 3,
        parent: '#NotifyArea'
    });				
	});
</script>
<div id='NotifyArea'> 
    </div>
</div>
";

?> 

  <?php

/*
+ ----------------------------------------------------------------------------------------------------+
|        e107 website system 
|        Plugin Meta File :  e107_plugins/fancybox/e_meta.php
|        Revision  2.0.4
|        Date      14.12.2011
|        Author    VR6Pete
+----------------------------------------------------------------------------------------------------+
*/
if (!defined('e107_INIT')){ exit; }
$lb_path = e_PLUGIN.'fancybox/';
include_lan($lb_path."languages/".e_LANGUAGE.".php");

echo '
<link rel="stylesheet" href="'.THEME.'js/sticky.css" type="text/css" />
<script type="text/javascript" src="'.e_PLUGIN.'fancybox/scripts/jquery-1.7.1.min.js"></script>
<script type="text/javascript" src="'.e_PLUGIN.'fancybox/scripts/jquery.easing-1.3.pack.js"></script>
<script type="text/javascript" src="'.THEME.'js/sticky.js"></script>
<script type="text/javascript" src="'.THEME.'js/easy.notification.js"></script>

<script>(function(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) return;
  js = d.createElement(s); js.id = id;
  js.src = "//connect.facebook.net/en_GB/all.js#xfbml=1&appId=108099175920739";
  fjs.parentNode.insertBefore(js, fjs);
}(document, \'script\', \'facebook-jssdk\'));</script>
<div id="fb-root"></div>
';
?>