diff -Nur audacity-src-1.3.2-beta-orig/lib-src/portaudio-v19/src/hostapi/jack/pa_jack.c audacity-src-1.3.2-beta/lib-src/portaudio-v19/src/hostapi/jack/pa_jack.c
--- audacity-src-1.3.2-beta-orig/lib-src/portaudio-v19/src/hostapi/jack/pa_jack.c	2006-10-29 01:05:49.000000000 +0200
+++ audacity-src-1.3.2-beta/lib-src/portaudio-v19/src/hostapi/jack/pa_jack.c	2008-02-11 01:13:04.000000000 +0100
@@ -1669,27 +1669,19 @@
     {
         for( i = 0; i < stream->num_incoming_connections; i++ )
         {
-            UNLESS( !jack_port_lock( stream->jack_client, stream->local_input_ports[i] ),
-                    paUnanticipatedHostError );
             if( jack_port_connected( stream->local_input_ports[i] ) )
             {
                 UNLESS( !jack_port_disconnect( stream->jack_client, stream->local_input_ports[i] ),
                         paUnanticipatedHostError );
             }
-            UNLESS( !jack_port_unlock( stream->jack_client, stream->local_input_ports[i] ),
-                    paUnanticipatedHostError );
         }
         for( i = 0; i < stream->num_outgoing_connections; i++ )
         {
-            UNLESS( !jack_port_lock( stream->jack_client, stream->local_output_ports[i] ),
-                    paUnanticipatedHostError );
             if( jack_port_connected( stream->local_output_ports[i] ) )
             {
                 UNLESS( !jack_port_disconnect( stream->jack_client, stream->local_output_ports[i] ),
                         paUnanticipatedHostError );
             }
-            UNLESS( !jack_port_unlock( stream->jack_client, stream->local_output_ports[i] ),
-                    paUnanticipatedHostError );
         }
     }