diff --git a/libs/ardour/disk_reader.cc b/libs/ardour/disk_reader.cc
index f0d5294087..4c52c01a34 100644
--- a/libs/ardour/disk_reader.cc
+++ b/libs/ardour/disk_reader.cc
@@ -761,14 +761,18 @@ DiskReader::overwrite_existing_midi ()
 		MidiTrack* mt = dynamic_cast<MidiTrack*> (&_track);
 		MidiChannelFilter* filter = mt ? &mt->playback_filter () : 0;
 
+#ifdef PROFILE_MIDI_IO
 		PBD::Timing minsert;
 		minsert.start ();
+#endif
 
 		midi_playlist ()->render (filter);
-
-		minsert.update ();
 		assert (midi_playlist ()->rendered ());
+
+#ifdef PROFILE_MIDI_IO
+		minsert.update ();
 		cerr << "Reading " << name () << " took " << minsert.elapsed () << " microseconds, final size = " << midi_playlist ()->rendered ()->size () << endl;
+#endif
 	}
 
 	return true;
diff --git a/libs/ardour/lv2_plugin.cc b/libs/ardour/lv2_plugin.cc
index a8f957b8a0..00df2283a3 100644
--- a/libs/ardour/lv2_plugin.cc
+++ b/libs/ardour/lv2_plugin.cc
@@ -3465,7 +3465,7 @@ LV2World::load_bundled_plugins(bool verbose)
 {
 	if (!_bundle_checked) {
 		if (verbose) {
-			cout << "Scanning folders for bundled LV2s: " << ARDOUR::lv2_bundled_search_path().to_string() << endl;
+			info << "Scanning folders for bundled LV2s: " << ARDOUR::lv2_bundled_search_path().to_string() << endmsg;
 		}
 
 		vector<string> plugin_objects;
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 0f180d867d..9b20ea5abd 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -3161,7 +3161,6 @@ Route::set_processor_state (const XMLNode& node, int version)
 			_disk_writer->set_state (**niter, version);
 			new_order.push_back (_disk_writer);
 		} else if (prop->value() == "triggerbox") {
-			cerr << "Seen triggerbox!\n";
 			if (!_triggerbox) {
 				_triggerbox.reset (new TriggerBox (_session, _default_type));
 				_triggerbox->set_owner (this);
diff --git a/libs/temporal/tempo.cc b/libs/temporal/tempo.cc
index 3829ae8c86..957e051cc3 100644
--- a/libs/temporal/tempo.cc
+++ b/libs/temporal/tempo.cc
@@ -547,9 +547,11 @@ TempoPoint::quarters_at_superclock (superclock_t sc) const
 
 		Tempo::superbeats_to_beats_ticks (superbeats, b, t);
 
+#ifndef NDEBUG
 		if (sc < _sclock) {
 			std::cout << string_compose ("%8 => \nsc %1 delta %9 = %2 secs rem = %3 rem snotes %4 sbeats = %5 => %6 : %7\n", sc, whole_seconds, remainder, supernotes, superbeats, b , t, *this, sc_delta);
 		}
+#endif
 
 		DEBUG_TRACE (DEBUG::TemporalMap, string_compose ("%8 => \nsc %1 delta %9 = %2 secs rem = %3 rem snotes %4 sbeats = %5 => %6 : %7\n", sc, whole_seconds, remainder, supernotes, superbeats, b , t, *this, sc_delta));
 
@@ -2388,9 +2390,7 @@ TempoMap::get_state ()
 int
 TempoMap::set_state (XMLNode const & node, int version)
 {
-	cerr << "\n\n\n TMAP set state\n\n";
 	if (version <= 6000) {
-		cerr << "Old version " << version << "\n";
 		return set_state_3x (node);
 	}
 
@@ -2432,8 +2432,6 @@ TempoMap::set_state (XMLNode const & node, int version)
 
 	_points.sort (Point::sclock_comparator());
 
-	cerr << "MAP LOADED\n";
-	dump (cerr);
 	return 0;
 }
 
@@ -3205,8 +3203,6 @@ TempoMap::update (TempoMap::SharedPtr m)
 		return -1;
 	}
 
-	cerr << "************** new tempo map @ " << m << endl;
-
 	/* update thread local map pointer in the calling thread */
 	update_thread_tempo_map ();