[Scott MacVicar]

try this

PHP Code:

//perms
$fperm=$DB_site->query("SELECT canview,forumid FROM forumpermission WHERE usergroupid='$bbuserinfo[usergroupid]'");
while($fperms = $DB_site->fetch_array($fperm)) {
  $perms["$fperms[forumid]"] = $fperms;
}
$DB_site->free_result($fperm);
unset($fperms);
//forums
$forum=$DB_site->query("SELECT forumid FROM forum");
while ($forums=$DB_site->fetch_array($forum)) {
  if($fperms["$forums[forumid]"]["canview"] == 1) {
    $forumperms[]=$forums["forumid"];
  }
  else {
    $forumperms[]=$forums["forumid"];
  }
}
$DB_site->free_result($forum);
unset($forums);

if(!empty($forumperms)) {
  $forumperms='AND forumid='.implode(' OR forumid=',$forumperms);
}
$getthreads=$DB_site->query("SELECT * FROM thread WHERE open='1' AND open<>10 $forumperms ORDER BY lastpost DESC LIMIT 10"); 


you should add open<>10 in the query as that is moved threads which you don't want, as it will pick up the moved thread plus the redirect left in the old forum.