image_get_random() doesn't return distinct images

Hello,

I rewrote the image.module in image_block() to get more than one random image. I mentioned, that sometimes two equal images are shown. I think I found a little bug in image_get_random():

  else {
    $result = db_query_range(db_rewrite_sql("SELECT DISTINCT(n.nid), RAND() AS rand FROM {node} n WHERE n.type = 'image' AND n.status = 1 ORDER BY rand"), 0, $count);
  }

should be:

  else {
    $result = db_query_range(db_rewrite_sql("SELECT DISTINCT(n.nid), RAND() AS rand FROM {node} n WHERE n.type = 'image' AND n.status = 1 ORDER BY rand"), 0, 0, $count);
  }

since I changed this, I get random images.

Tobias