We have a customer with a mix of computers, pc's, linux and macs. They
access the internet though Border Manager 3.8 proxy server with access
rules enforced. We have single sign on checked, and SSL on port 443 with
HTML form set, and Craig's latest proxy.cfg file with the MAC setting to
1 (also tried 0). Each and every time a mac or linux (SUSE) tries to
access the Internet using the proxy server, they do not get the border
manager login screen for authentification, but get Object not found,
although the address showing appears to be corect
( Only the
http proxy is set up in the web browser, no setting for ssl etc.

We have an identical set up at aother customer but with Border Manager
3.5, and this works every time!!

Any ideas would be most welcome.