Index: openacs-4/packages/forums/lib/message/post.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/forums/lib/message/post.tcl,v
diff -u -r1.26 -r1.27
--- openacs-4/packages/forums/lib/message/post.tcl	7 Jun 2018 18:08:11 -0000	1.26
+++ openacs-4/packages/forums/lib/message/post.tcl	11 Jun 2018 14:04:10 -0000	1.27
@@ -180,10 +180,6 @@
                 -format $format \
                 -user_id $displayed_user_id
 
-            # DRB: Black magic cache flush call which will disappear when list builder is
-            # rewritten to paginate internally rather than use the template paginator.
-            cache flush "messages,forum_id=$forum_id*"
-
             if { [forum::use_ReadingInfo_p] } {
                 # remove reading info for this thread for all users (mark it unread)
                 set db_antwort [db_exec_plsql forums_reading_info__remove_msg {}]