Authentication failed !

Hey since this morning I(nonrrot user) am not able to log into my system with my username. I am using redhat linux kernel release 2.6.9-5.ELsmp. I aslo found the folowing output for chkconfig command:
[root@Station130 ~]# chkconfig --list|grep ldap
ldap 0: off 1: off 2: off 3: off 4: off 5: off 6: off
can anyone help me in getting out of this?

Thanks in advance.

service ldap start

What is the output from getent passwd?

Ashok:x:516:516::/home/Ashok:/bin/bash

So how were you are to get the (correct) result of getent passwd if you were not able to login in?

Ya, I am able to login now. It's some mistake I did with my LDAP configuration.
So, I disabled the LDAP configuration and used MD5 password authentication.
But, there is a problem. All working fine except that I am getiing some folder name like
"Somebody's Home" instead of "Ashok's Home" on my Desktop and my system got slow while accessing my folders/files in my filesystem.
Also, when I try to open my terminal I am getting the commandline as:
id: cannot find name for user ID 516
[I have no name!@Station130 ~]$

Can you please assist me?
Thanks in advance.

For your kind information the contes of different files are as follows.
Contents of passwd file:

[root@Station130 ~]# cat /etc/passwd
 .........
 Ashok:x:516:516::/home/Ashok:/bin/bash
.........   

Contents of group file:

[root@Station130 ~]# cat /etc/group
 .........
 Ashok:x:516:
.........   

Output of ls -l /home command:

[I have no name!@Station130 ~]$ ls -l /home
 drwx------  30 516 Ashok    4096 Dec  3 13:58 Ashok

Waiting for support,