[iojam]

Fallback,

you should modify your vbseo_sitemap_functions.php file.
FIND:

   	function vbseo_get_forumlist($parentid = 0)
   	{
...
   	}

REPLACE WITH:

   	function vbseo_get_forumlist($parentid = 0)
   	{
    	global $vbulletin, $vboptions, $forumcache, $_FORUMOPTIONS, $bbuserinfo;

    	if($vbulletin->forumcache)
    		$forumcache = $vbulletin->forumcache;


    	$forumlist = array();

		$forums_scope = array_keys($forumcache);

    	foreach ($forums_scope AS $forumid)
		if($forumid>0)
		{
    		$forum = $forumcache["$forumid"];
    		if (!($forum['options'] & ($_FORUMOPTIONS?$_FORUMOPTIONS['active']:$vbulletin->bf_misc_forumoptions['active'])))
			{
				//continue;
			}

			$forumperms = $bbuserinfo['forumpermissions']["$forumid"];
			if ((!($forumperms & CANVIEW)||!($forumperms & CANVIEWOTHERS)) AND $vboptions['hideprivateforums'])
			{
				continue;
    		}

   			$forumlist[] = $forumid;

    	}   

    	return array_unique($forumlist);
   	}