Session Issue in Portal application

[Dhamo]

Am working in a weblogic portal apps using CCA siteminder(SM) for auth, so after getting authenticated, it lands up in the homepage and am setting all the required user information in the session, then when I click any link, session becomes null & again the whole login process happens (after going through the SM authention and login controller and loading once again user object into session) and its redirecting & landing me into the homepage in the clicked link page as well.

Also this issue is not happening consistently. Few times its working continuously for a day and few times its breaking continuosly.

This is really a strange issue and am struck with this issue for 2 weeks , so any thot on this will really help me.

[Dhamo]

Found the problem and resolved it. There were invalid image path mentioned in the project, so the server was looking for those images and once its not finding those images it throws 404 error and then its clearing the Session . Fixed the broken links and now it works fine. Its a too minor bug but caused bigger problem.