Index: openacs-4/packages/forums/lib/message/thread-chunk.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/forums/lib/message/thread-chunk.tcl,v
diff -u -N -r1.5.6.3 -r1.5.6.4
--- openacs-4/packages/forums/lib/message/thread-chunk.tcl	27 Jun 2007 13:23:31 -0000	1.5.6.3
+++ openacs-4/packages/forums/lib/message/thread-chunk.tcl	28 Jun 2007 11:26:17 -0000	1.5.6.4
@@ -78,11 +78,7 @@
 
 # More Tcl vars (we might as well use them - Ben)
 if { [string equal $forum(presentation_type) flat] } {
-        if { [db_type] == "postgresql" } {
-                set order_by "t.posting_date, tree_sortkey"
-        } else {
-                set order_by "posting_date, tree_sortkey"
-        }
+    set order_by "t.posting_date, tree_sortkey"
 } else {
     set order_by "tree_sortkey"
 }