Disable collapse of admin meta boxes

Add this to your functions file and it will kill the metabox toggles:

function kill_postbox(){
    global $wp_scripts;
    $footer_scripts = $wp_scripts->in_footer;
    foreach($footer_scripts as $key => $script){
        if('postbox' === $script)
            unset($wp_scripts->in_footer[$key]);
    }
}
add_action('admin_footer', 'kill_postbox', 1);