Customer experienced that it took 2 minutes to log into WebUI.
WebUI showed "the server is not responding" message.
PIM 12.9 SP2 EntM / AD userstore
Ldap query returns required user objects and on user object sometimes it looks for referral object in Ldap again. Hence it delays response from AD server.
This is fixed by testfix T51S076
Please contact CA Support for testfix.