Authentication trouble

Hi,

We are implementing the SSO for our application.
We are implementing the SSO through the LDAP Directory for Authentication.
We have installed Webgate Plugin and also using the Oracle Access Manager.
We have configured the CFG(eapps.cfg and application cfg) file as per the guidelines. We are implementing the Sample Security Adapter. We have not modified the code provided in the CPP file provided by Siebel for 7.8 SDK.
We have configured the URL with the logon page. So whenever user will request the URL(Application) the logon page(Company Logon Page) appear and ask for the logon credential.

We are facing the problem; Ideally, when user enters credential then after successfull logon it should navigate to the application home page.
But we are not navigating to the home page. After taking 30-40 minutes it's giving error:" Page can't be found".

For your infomation:
HeaderVar SSO_SIEBEL_USER cn
HeaderVar SOMETHING mail

<removed for security concerns by AnnieMod -- Cleanup Admin>
 
Please let us know where we are getting wrong. Also let us know if you want more information from our side.
Please provide us the solution as soon as possible.

Thanks in Advance.
Regards