I configured my system against an NIS server and since I wanted to chroot while using scp service, I had to use nscd else it gave errors while resolving users. But now I am stuck at another issue.
The nscd cache refuses to reckon the password changes of NIS users. Once ypbind binds to a servers, no matter how many time i change the password, my system still identifies only the earlier password.
To add to the agony, even if the NIS server becomes unavailable, the nscd cache authenticates the users.
Though service nscd reload, clears the cache. But how should I make sure the cache is cleared each time the password is changes either by ypasswd command on the client or the server ??

why cache passwords in the first place?

maybe you could disable it from nscd.conf or set a timer to clear the cache every x mins.

please check the man page for nscd.conf

NIS client requires nscd to be on for better perfomance.

Anyways, I found :
service nscd reload (not restart)
clear the nscd cache (most of the time, :P)

Adjust the nscd configuration. Remove the cache for password, and tune down the time limit on everything else to suit your needs.