7 January 2009 at 9:10am
(Last edited: 7 January 2009 9:11am),
This is something that is probably caused by your webhost and not SilverStripe.
Normally the host setup www.domain.com to have the same contents as domain.com, but they (the webhost) can have setup the server to return some other content.
Just check with your host and they can probably fix it.