diff -r 130fb8a8dbb9 -r d3167c40e7b9 degal/utils.py
--- a/degal/utils.py	Wed Jul 01 20:03:41 2009 +0300
+++ b/degal/utils.py	Wed Jul 01 20:15:08 2009 +0300
@@ -84,6 +84,7 @@
     
     for attr in attrs :
         if attr in obj.__dict__ :
+            # this will drop refcounts and free resources, so it may take some execution time
             del obj.__dict__[attr]
 
 def first (iterable) :