SPNego fails with Failed to find any Kerberos Key error .

Hi,

I have configured SPNego and restarted j2ee. But am still getting the logon pad ofr the portal.This was the error that I got in the trace file .

Acquiring credentials for realm <REALM NAME >failed

[EXCEPTION]

#1#GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos Key)

Is it a problem with keytab file which was generated ?

Any help would be most appreciated.

Rgrds