Thanks Gizmo. It has also occurred to us that perhaps our ISP has changed something and we are looking into this. If something was changed it was without our knowledge.
We are able to do everything else on the site besides use the UBB. Our members as well. We have not made any recent changes to our board other than approving new members, a normal daily activity...until Saturday.
Another thing we have noticed is our 'admin' person is no longer able to to do anything under that user ID (which has all of the admin functions) without creating various errors. This also happened as of Saturday at the same time the UBB stopped allowing us (any of the administrators) in.