<?
session_cache_limiter ('private, must-revalidate');
$cache_limiter = session_cache_limiter();
//
session_cache_expire(60); // in minutes
session_start() ;
?>
If i do not set must-revalidate, IE seems to cache session variables without refreshing them
If i post a form then it refreshes the variables
Firefox does not have this problem
So, be sure to use must-revalidate