A new bug in mysql (version 5.1.52)?

I have mysql installed on 2 CentOS machines and for both I cannot solve this issue. See red coloured result

 mysql> select host, password from mysql.user;

+-----------------------+-------------------------------------------+
| host                  | password                                  |
+-----------------------+-------------------------------------------+
| localhost             | *00E247AC5F9AF26AE0194B41E1E769DEE1429A29 |
| localhost.localdomain |                                           |
| 127.0.0.1             |                                           |
| localhost             |                                           |
| localhost.localdomain |                                           |
+-----------------------+-------------------------------------------+
5 rows in set (0.01 sec)



mysql> select password from mysql.user order by host;
+-------------------------------------------+
| password                                  |
+-------------------------------------------+
|                                           |
| *00E247AC5F9AF26AE0194B41E1E769DEE1429A29 |
|                                           |
|                                           |
|                                           |
+-------------------------------------------+
5 rows in set (0.01 sec)



mysql> select password from mysql.user order  by host limit 0,5;
+-------------------------------------------+
| password                                  |
+-------------------------------------------+
|                                           |
| *00E247AC5F9AF26AE0194B41E1E769DEE1429A29 |
|                                           |
|                                           |
|                                           |
+-------------------------------------------+
5 rows in set (0.01 sec)



mysql> select password from mysql.user order  by host limit 0,1;
+----------+
| password |
+----------+
|          |
+----------+
1 row in set (0.01 sec)

mysql> select password from mysql.user order  by host limit 1,1;
+----------+
| password |
+----------+
|          |
+----------+
1 row in set (0.01 sec)

mysql> 

mysql> select password from mysql.user order  by host limit 2,1;
+----------+
| password |
+----------+
|          |
+----------+
1 row in set (0.01 sec)

mysql> select password from mysql.user order  by host limit 3,1;
+----------+
| password |
+----------+
|          |
+----------+
1 row in set (0.00 sec)


mysql> select password from mysql.user order  by host limit 4,1;
+----------+
| password |
+----------+

|          |

+----------+

1 row in set (0.00 sec)