For ADFS 2.0 to work with NetIQ Access Manger SAML 2.0, it is required to disable the Certificate Revocation List (CRL) checking.
To disable the CRL checking:
Modify the tomcat7.conf file of the Identity Server located at /opt/novell/nam/idp/conf/tomcat7.conf
Add this parameterJAVA_OPTS="${JAVA_OPTS} -Dcom.novell.nidp.serverOCSPCRL=false"
Restart the Identity Server by using this command: /etc/init.d/novell-idp restart.