Index: branches/1.0.x/inc/js/form_manager.js
===================================================================
diff -u -N -r14759 -r14763
--- branches/1.0.x/inc/js/form_manager.js	(.../form_manager.js)	(revision 14759)
+++ branches/1.0.x/inc/js/form_manager.js	(.../form_manager.js)	(revision 14763)
@@ -330,6 +330,8 @@
 		function ($data) {
 			$data = eval('(' + $data + ')');
 			$me.setFieldStatus($prefix, $field, $data.status == 'OK' ? undefined : $data.status);
+
+			$("input[type='submit']").attr('disabled', !$.isArray($data.other_errors) );
 		}
 	);