i see the problem only occurs when www is missing from url - and this is probably out of your support remit - i'm looking into forcing the www with .htaccess - does that sound like the right path for me to take?
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.