Hi Antony
Can you confirm the version of the Gateway/Policy Manager?
What kind of user is logging in, is this a one defined in the Internal Identity Provider, or maybe an LDAP lookup is occurring?
Have a look at the logs:-
For the gateway have a look at /opt/SecureSpan/Gateway/node/default/var/logs/ssg_0_0.log
For Policy Manager review (Presuming it is Windows) C:\Users\<user>\.l7tech\ssm0.log
Hopefully the logs might give us a clue as to what is occurring.
Regards
Christopher Clark
CA Support