diff -r 6053622aae81 -r ffe5e1631081 common/mixins.py
--- a/common/mixins.py	Wed Feb 25 18:39:21 2009 +0100
+++ b/common/mixins.py	Wed Feb 25 18:40:06 2009 +0100
@@ -369,22 +369,18 @@
     """provide default implementations for IProgress interface methods"""
 
     @property
-    @cached
     def cost(self):
         return self.progress_info()['estimated']
 
     @property
-    @cached
     def revised_cost(self):
         return self.progress_info().get('estimatedcorrected', self.cost)
 
     @property
-    @cached
     def done(self):
         return self.progress_info()['done']
 
     @property
-    @cached
     def todo(self):
         return self.progress_info()['todo']