I have installed Request tracker v 4.0.8 and recently I have integrated it with Active Directory 2008 using the link: How to integrate request tracker 4.0.8 with active directory 2008 server
and it works. But I have encountered with one strange issue. When I login to the RT using the AD username and pass, it logs in and works fine. But then after I delete that AD user in the AD server, that user is still able to login to the RT until I restart the apache in RT server. I think Apache is caching the AD user. That is why a deleted AD user can still login to the RT server until I restart Apache in RT server. How to resolve this?