I have a number of Ajaxified controls and panels using the RadAjaxManagerProxy. Everything works fine, except the following scenario: I have a panel (UpdatedControl) that shows or hides based on a radio button (AjaxControlID). I have another panel that shows or hides based on a dropdown list. The radio button controlled panel has a number of fields with validators attached. If the panel controlled from the radio button is shown, for every dropdownlist ajax call on the screen, all validation messages inside the radio button controlled panel will repeat. I've read that taking the validators outside the Ajaxified panel will fix the problem, but this is not feasible as the validation indicators need to appear next to the fields they are validating.