[LordNinja]

Found the problem with subdirs like /forum

You should replace:

$vboptions[bburl]

with:

$vbulletin->options[bburl]

on line 78 of ajax_search.php

($vboptions[bburl] return only yourdomain.com while the new var return yourdomain.com/forum or whatever is your full bb url)

I also recommend mad@Max put this line (add before 15th line) on clientscript/vbulletin_ajax_live_search.js:

var hurl=""

then people will easier find what to edit