Session variables with SSL between Firefox and IE8

When I come into the app, I set two session variables and then open the main page. The first thing I do is select a logon screen which uses https. As soon as I go there, Firefox sets the session variables to null while IE8 carries them through.

The urls are identical in both browsers. Why is Firefox clearing the session variables?

Hi,

The following page looks relevant to your situation: http://stackoverflow.com/questions/441496/session-lost-when-switching-from-http-to-https-in-php

James