WordPress 3.0 wp_get_nav_menu_item() links missing

This is my first post here… I figured it was about time I get involved with the development where I can.

I’m experimenting with the wp_nav_menu function and I’ve managed to enable my theme, create a menu and bring this into my theme using both a widget and manually with wp_nav_menu().

Both resulted in the expected output but without the relevant href… this was just empty.

I’ve manually got this working by changing line 164 in nav-menu-template.php as follows:

ORIGINAL
$href = isset($menu_item->link) ? ' href="'. esc_url($menu_item->link) .'"' : '';

MOD
$href = isset($menu_item->guid) ? ' href="'. esc_url($menu_item->guid) .'"' : '';

Am I being thick or is this a genuine mistake?

Apoligies if it’s the former ??