Question : Outlook 2007 Continuous Authencication

We have just moved onto a MS Windows SMall Bussiness Server 2008/Exchange 2007. The domain users have been created, but when I join them to the domain and open their outlook, their Outlook profile continuously prompts for a Username and Password. Whn I put in the details, it doesn't acceptit. When I click ignore/cancel it says connected to exchange until the next time it prompts for username and password.

NOTE: REgardless of the authentication prompts, the email inboud and outbound still functions as expected but we just keep getting the authentication "pop-ups"

Please assist if possible.

Thanks
Christo

Answer : Outlook 2007 Continuous Authencication

There currently is a known issue where this happens after the installation of the most recent updates. In many cases this can be resolved by installing or re-installing Exchange 2007 update rollup 9. It can be found in the following link.
http://www.microsoft.com/downloads/details.aspx?FamilyID=55320be2-c65c-48bb-bab8-6335aa7d008c&displaylang=en

Though I have found the above has resolved in each of my cases, some others have found the following to work:
http://social.technet.microsoft.com/Forums/en-US/exchangesvradmin/thread/0c94187d-bc97-4fa5-9413-e8762a25a360