Unfortunately that is advise that that the CORE isn't following - in qa-base.php replacing > qa_opt('site_url'),< with > qa_default_option('site_url') < solve the issue for me completely.
Maybe that's a quick fix for everyone.
function qa_path_absolute($request, $params = null, $anchor = null)
{
//return qa_path($request, $params, qa_opt('site_url'), null, $anchor);
return qa_path($request, $params, qa_default_option('site_url'), null, $anchor);
}