Renames the first submenu item for a custom post type

rename-cpt-sub.php

<?php
/*
Plugin Name: *WPSE13210
*/
! defined( 'ABSPATH' ) and exit;

add_action( 'init', 'register_academia' );

/**
 * Registers te post type academias
 *
 * @return void
 */
function register_academia()
{
	register_post_type(
	    'academias'
	,   array (
	        'can_export'          => TRUE
	    ,   'exclude_from_search' => FALSE
	    ,   'has_archive'         => TRUE
	    ,   'hierarchical'        => TRUE
	    ,   'label'               => 'Academias'
	    ,   'labels'              => array (
	    		'menu_name' => 'See All Academias'
	    	,	'name' => 'Academias'
	    	)
	    ,   'menu_position'       => 5
	    ,   'public'              => TRUE
	    ,   'publicly_queryable'  => TRUE
	    ,   'query_var'           => 'academias'
	    ,   'rewrite'             => array ( 'slug' => 'academias' )
	    ,   'show_ui'             => TRUE
	    ,   'show_in_menu'        => TRUE
	    ,   'show_in_nav_menus'   => TRUE
	    ,   'supports'            => array ( 'editor', 'title' )
	    )
	);
}

add_filter( 'attribute_escape', 'rename_second_menu_name', 10, 2 );

/**
 * Renames the first occurence of 'See All Academias' to 'Academias'
 * and deactivates itself then.
 * @param $safe_text
 * @param $text
 */
function rename_second_menu_name( $safe_text, $text )
{
	if ( 'See All Academias' !== $text )
	{
		return $safe_text;
	}

	// We are on the main menu item now. The filter is not needed anymore.
	remove_filter( 'attribute_escape', 'rename_second_menu_name' );

	return 'Academias';
}

See http://wordpress.stackexchange.com/questions/13210/post-type-label-name/ for more information.