here is the small addon to the hack to count images
function count_images($id) {
$sql = "SELECT * FROM ". prefix("images") ." WHERE albumid = $id";
$result = mysql_query($sql);
while($r = mysql_fetch_array($result)) {
$count++;
}
return $count;
}
The feed shows the latest images from the whole gallery not only from the latest album, but on the album/image page it shows only the ones of that album.
It is not possible to show the latest albums with the feed unless you want to do some coding. You would have to create your own feed using the image_album_statistics plugin for example.