Index: trunk/ippTasks/nightly_stacks.pro
===================================================================
--- trunk/ippTasks/nightly_stacks.pro	(revision 28407)
+++ trunk/ippTasks/nightly_stacks.pro	(revision 28408)
@@ -186,6 +186,6 @@
     book setword nsData $today nsState NEW
 
-    command echo $today
-#   command automate_stacks.pl --clean_old --date $today
+#    command echo $today
+   command automate_stacks.pl --clean_old --date $today
   end
 
Index: trunk/ippconfig/recipes/nightly_science.config
===================================================================
--- trunk/ippconfig/recipes/nightly_science.config	(revision 28407)
+++ trunk/ippconfig/recipes/nightly_science.config	(revision 28408)
@@ -12,9 +12,9 @@
   RETENTION_TIME U16 7
 END
-CLEAN_MODES METADATA
-  MODE STR DIFF
-  COMMAND STR difftool
-  RETENTION_TIME U16 30
-END
+# CLEAN_MODES METADATA
+#  MODE STR DIFF
+#  COMMAND STR difftool
+#  RETENTION_TIME U16 30
+# END
 
 FILTERS MULTI