Links_weblink validation is not working anymore since location integration

Hi,

I have the links_weblink module working nicely.
I added a validation_hook to links_weblink, so it is impossible to insert an weblink which is allready in the system.

/**
 * Implementation of hook_validate().
 */
function links_weblink_validate(&$node) {
if (($row = db_fetch_object( db_query("SELECT l.lid , ln.nid FROM {links} l INNER JOIN
{links_node} ln ON l.lid = ln.lid WHERE l.url ='%s'",
$node->links_weblink_url))) && ($row->nid != $node->nid)){
form_set_error('url', t('Link allready added in the system'));
}
else
{
links_weblink_node_build($node);
}
}

But with adding localize information to the weblink nodetype, I am getting this message 'Link allready added in the system' when I only alter the location information.
Does anybody know how to alter the validation_hook so it is not thinking I want to add a new weblink to the system?

I am not seeing a connection in the database between the location, and the node_links, or links module, please help!
Is there a location variable which I can look into in the links_weblink module?
Thanks in advance.

greetings,
Martijn