[KrisP]

//additional code
$alanguages = array ('af','sq','ar','be','bg','ca','zh-CN','hr','cs','da','nl','en','et','tl','fi','fr',' gl','de','el','iw','hi','hu','is','id','ga','it',' ja','ko','lv','lt','mk','ms','mt','no','fa','pl',' pt','ro','ru','sr','sk','sl','es','sw','sv','zh-TW','th','tr','uk','vi','sq','ca','et','tl','gl',' hi','id','lv','lt','mt','sl','uk','vi','cy','yi');
if(!$archived)
foreach($alanguages as $language) {
$vbseo_stat['t']++;
vbseo_add_url(vbseo_url_thread($threadrow, $p, $archived).'?language='.$language, $prior, $threadrow['lastpost'], $freq);
}
//end additional code

Seems: ca dl et hi id lv lt mt sl sq tl uk vi
are duplicates.

Correct:

//additional code
$alanguages = array ('af','ar','be','bg','ca','cs','cy','da','de','el' ,'en','es','et','fa','fi','fr','ga','gl','hi','hr' ,'hu','id','is','it','iw','ja','ko','lt','lv','mk' ,'ms','mt','nl','no','pl','pt','ro','ru','sk','sl' ,'sq','sr','sv','sw','th','tl','tr','uk','vi','yi' ,'zh-CN','zh-TW');
if(!$archived)
foreach($alanguages as $language) {
$vbseo_stat['t']++;
vbseo_add_url(vbseo_url_thread($threadrow, $p, $archived).'?language='.$language, $prior, $threadrow['lastpost'], $freq);
}
//end additional code