--- lib/python/zope/interface/declarations.py-orig	2008-07-17 17:34:40.000000000 +0200
+++ lib/python/zope/interface/declarations.py	2008-09-30 21:19:50.203125000 +0200
@@ -300,6 +300,9 @@
       """
     # This also manages storage of implementation specifications
 
+    # Omit classes created on-the-fly
+    if cls.__module__ is None or cls.__name__=='r' and cls.__module__=='Shared.DC.ZRDB.Results':
+	return _empty
     try:
         spec = cls.__dict__.get('__implemented__')
     except AttributeError: