I have changed the security setting on my index_html to only allow authenticated users to view the page and added the following code to my homepage zope site (to display the username on the homepage):- <dtml-var expr="_.SecurityGetUser().getUserName()"> On some PC's this works fine and when you keyin your username and password the homepage is displayed (with the username shown). On other PCs however you are prompted to login but once you enter a valid username and password the homepage is displayed but the username shows as "Anonymous User". Zope has obviously validated the user but then somehow switched back to "Anonymous User". I have tried to change various security settings within the internet explorer browser (version 5) but cannot get it to show the correct user. Out of 5 PCs, 3 work correctly and 2 show Anonymous User. Any help would be appreciated Finbarr