Index: openacs-4/packages/notifications/tcl/sweep-procs-postgresql.xql
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/notifications/tcl/sweep-procs-postgresql.xql,v
diff -u -r1.9 -r1.10
--- openacs-4/packages/notifications/tcl/sweep-procs-postgresql.xql	27 Jun 2007 18:54:48 -0000	1.9
+++ openacs-4/packages/notifications/tcl/sweep-procs-postgresql.xql	2 Sep 2008 22:32:00 -0000	1.10
@@ -34,7 +34,7 @@
               left outer join notification_user_map using (notification_id, user_id)
             where sent_date is null
               and creation_date <= notif_date
-              and notif_date < current_timestamp
+              and (notif_date is null or notif_date < current_timestamp)
               and interval_id = :interval_id
           order by user_id, type_id, notif_date
         </querytext>