Session is being lost between GET and POST

My application is being developed in Tomcat 4.1.18.
I have a servlet that acts as a Controller and JSP's that make up the View. Basically, the session gets lost in the following manner:
The application's web.xml file is set with Authentication method of Unspecified. Basically, it's not a high security application, we just need to make sure that the user maintains a session throughout the application.
User is presented with a page (login.jsp). They present their credentials. The controller does an include (RequestDispatcher.include) on a jsp (this jsp simply does a setProperty *) to fill the bean. Then, the controller passes control (through RequestDispatcher.forward) to the Action servlet. The Action does some processing and forwards to the next destination. Next, the user clicks on a link (GET) (this causes the URL to be rewritten with the correct session ID). In this particular instance, the user is presented with a form to fill out. The user fills out the form and it POSTS to the controller. At this point, the controller attempts to access the session and it is lost!
Frustrating. Please feel free to email at [email protected] Thanks.

I just tried encoding the FORM ACTION and no dice. I'm pretty new to JSP's so I'm wondering if its something stupid that I'm doing (or not). I've never had this problem using straight servlets before.
It would be hard for me to justify getting rid of the JSP's and going with a straight servlet solution.
I'm also wondering if my Authentication:Unspecified in the web.xml file has anything to do with my current troubles.

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semi star gazer wrote:
I am running into the following scenario: Page 1 includes page 2, on both pages a session variable is returned to the screen. On occasions, page 2 throws an error on the session variable even though it was successfully called on page 1.
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Session is being lost between GET and POST

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