diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index b624410a27..d0dca37e0a 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -404,6 +404,15 @@ Route::process_output_buffers (BufferSet& bufs,
 
 	bufs.is_silent (false);
 
+#if 0
+	cerr << name() << " POB, buffers: count: " << bufs.count() << " avail " << bufs.available() << endl;
+	int na = bufs.count().n_audio();
+	for (int nn = 0; nn < na; ++nn) {
+		AudioBuffer& ab (bufs.get_audio (nn));
+		cerr << "\tAudio buffer " << nn << " @ " << &ab << " data @ " << ab.data() << endl;
+	}
+#endif
+
 	/* figure out if we're going to use gain automation */
 	if (gain_automation_ok) {
 		_amp->setup_gain_automation (start_frame, end_frame, nframes);
diff --git a/libs/ardour/session.cc b/libs/ardour/session.cc
index 7aaf370a24..366ad8002e 100644
--- a/libs/ardour/session.cc
+++ b/libs/ardour/session.cc
@@ -3335,19 +3335,14 @@ Session::graph_reordered ()
 		return;
 	}
 
-	cerr << "Session begins graph reorder\n";
-
 	/* every track/bus asked for this to be handled but it was deferred because
 	   we were connecting. do it now.
 	*/
 
 	request_input_change_handling ();
 
-	cerr << "Session graph reorder 2\n";
 	resort_routes ();
 
-	cerr << "Session graph reorder 3\n";
-
 	/* force all diskstreams to update their capture offset values to
 	   reflect any changes in latencies within the graph.
 	*/
@@ -3359,8 +3354,6 @@ Session::graph_reordered ()
 			tr->set_capture_offset ();
 		}
 	}
-
-	cerr << "Session graph reorder 4\n";
 }
 
 framecnt_t