thanks to the excellent tool (tcpwatch) I was able to pinpoint the issue I am having with LoginManager. It seems that it is returning an HTTP/1.0 500 Internal Server Error as the response to the proxy which then tells the browser that the page is a no go (despite the fact that the login page follows as the content). So the browser displays the error message page we all know too well without the content: HTTP 500 - Internal server error Internet Explorer This does not happen it seems when the page is viewed without a client proxy (tcpwatch or other). Note: this request is actually double proxied - I have an Apache reverse proxy setup. Is this problem an Apache issue, or a Zope issue? Please help.... TIA, and beaucoup thanks on the previous question. Tim McLaughlin