Wrong permission in configuration file in phpMyAdmin

Actually I was trying to access phpMyAdmin from firefox. But i was constantly getting the same message
"Wrong permissions on configuration file, should not be world writable!" .
I did lil bit of googling as well but it didn't helped me either. I tried giving all the permissions(rwx) to owner, group & others using

kailash@kailash-desktop:~$ sudo chmod 777 /opt/lampp/phpmyadmin/config.inc.php

which couldn't solve it out either.
Finally , as the warning message suggests-"should not be world writable", i slightly tweaked my previous command to

kailash@kailash-desktop:~$ sudo chmod a-w /opt/lampp/phpmyadmin/config.inc.php

Ah!! it worked then. Thank you.