Jesse Larson
Not sure, but it may be "hidden". When logged in as Admin (so you can edit), select "Edit" and the "Dashboard". From here, under "Maintenance" click on "Write Introduction" Locate your Introductory text and on LHS it will show the desired position for it to appear. If this is set to "Hidden" use the drop down arrow and select where you want it to be. Then click on "Save" and you should be okay. If this isn't the scenario you have then I don't know why it wouldn't be showing for guests.
Regards,
Ian Marr
Jesse Larson