This one goes out to all the Exchange Admins out there
If you want your users running Microsoft Windows Vista to be happy when they use Outlook Web Access (OWA) you should install this Hotfix
This also fixes the annoying "Click here to activate" prompting.
Users, if your Admin hasnt installed this, and you need to use OWA, choose the basic experience at signin as a workaround.
PS. Exchange Admins, RPC over HTTP is your friend! enable this, and your users will love you!