How to get all posts (custom types) from all sites

Hello all,

I’m building a project where I have several custom post types and taxonomies in the main blog and on the “child” sites/blogs.

I need to show the last 50 “posts” whatever type they are in whatever site they’ve been published.

I’ve look for plugins, although I’d prefer to code the thing myself. I got to MU-Helpers, which has the function:

function get_all_blog_posts( $num_per_blog = 1, $orderby = 'date', $sort = 'post_date_gmt' )
{
	$posts = array();
	$blogs = get_blog_list( 0,'all' );
	foreach ( $blogs as $blog ):
		switch_to_blog($blog['blog_id']);
			$posts = array_merge( $posts, get_posts('orderby='.$orderby.'&numberposts='.$num_per_blog) );
		restore_current_blog();
	endforeach;

	return _quicksort( $posts, $sort );
}

But I guess the “get_posts” function just retrieves the “post” post types, not the custom ones.

Any idea how to achieve this?

Thanks!