hi, i know this is a bit old now, but i have a similar-ish setup / issue:

our bluecoat proxy in transparent mode is set to 'cookie'

blackberry users are presented with an authentication form based on the client address (which is always the BES MDS box)

the BES MDS is set to accept cookies, http auth, sensible timeouts etc

this all works except...

PROBLEM:

when you navigate to a new site on the blackberry it prompts for credentials each time. it's fine so long as you stay within a domain, then it prompts for auth again.

any ideas on how to get around this?

thanks very much