nscd dead but subsys locked

Issue

• Server (out of around 100) every one week or so causes login issues and takes about 30min or so to login.
• To resolve the issue, once login to that server and stop the nscd daemon and then everything comes back to normal state.

• All the servers are running same OS installed from same kickstart image and hardware is also same but its causing problem on one server only.

• Some preliminary information from that server:

[root@server1 ~]# nscd -V
nscd (GNU libc) 2.5
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Thorsten Kukuk and Ulrich Drepper.

• Here is the issue:

[root@server1 /home]# service nscd status
nscd dead but subsys locked

[root@server1 /home]# service nscd restart
Stopping nscd:                                            [FAILED]
Starting nscd:                                              [OK ]

[root@server1 /home]# service nscd status
nscd (pid 21714) is running...