generic.jsonp raises HTTP(404)

applications/welcome/views/generic.jsonp

@@ -2,6 +2,13 @@
 ###
 # response._vars contains the dictionary returned by the controller action
 ###
+
+# security check! This file is an example for a jsonp view.
+# it is not safe to use as a generic.jsonp because of security implications.
+
+if response.view == 'generic.jsonp':
+   raise HTTP(501,'generic.jsonp diasbled for security reasons')
+
 try:
        from gluon.serializers import json
        result = "%s(%s)" % (request.vars['callback'], json(response._vars))