Index: Form.py
===================================================================
--- Form.py	(revision 14433)
+++ Form.py	(working copy)
@@ -57,6 +57,12 @@
     # FIXME: backwards compat hack to make sure tales dict exists
     if not hasattr(self, 'tales'):
         self.tales = {}
+    #JM - All fields on read-only forms are automagically disabled.
+    if id == 'editable':
+      here = get_request().get('here',None)
+      if here is not None and not get_request().AUTHENTICATED_USER.has_permission(\
+		      'Modify portal content', here): 
+        return 0
 
     tales_expr = self.tales.get(id, "")
     if tales_expr: