diff --git a/cdrskin/cdrskin_timestamp.h b/cdrskin/cdrskin_timestamp.h
index a2b6385..8f27fe2 100644
--- a/cdrskin/cdrskin_timestamp.h
+++ b/cdrskin/cdrskin_timestamp.h
@@ -1 +1 @@
-#define Cdrskin_timestamP "2008.04.12.164606"
+#define Cdrskin_timestamP "2008.04.15.094133"
diff --git a/libburn/os-linux.h b/libburn/os-linux.h
index bd91a34..dcd4c46 100644
--- a/libburn/os-linux.h
+++ b/libburn/os-linux.h
@@ -43,9 +43,12 @@ SIGKILL, SIGCHLD, SIGSTOP, SIGURG, SIGWINCH
 /* The maximum size for a (SCSI) i/o transaction */
 /* Important : MUST be at least 32768 ! */
 /* ts A70523 : >32k seems not good with kernel 2.4 USB drivers and audio
-#define BURN_OS_TRANSPORT_BUFFER_SIZE 65536
+   #define BURN_OS_TRANSPORT_BUFFER_SIZE 32768
 */
-#define BURN_OS_TRANSPORT_BUFFER_SIZE 32768
+/* ts A80414 : curbed in write.c CD media to Libburn_cd_obS = 32 kiB
+               re-enlarged transport to 64 kiB for BD-RE experiments
+*/
+#define BURN_OS_TRANSPORT_BUFFER_SIZE 65536
 
 
 /* To hold the index number of the most recently delivered address from
diff --git a/libburn/write.c b/libburn/write.c
index f03b2f6..9790fea 100644
--- a/libburn/write.c
+++ b/libburn/write.c
@@ -49,6 +49,24 @@
 extern struct libdax_msgs *libdax_messenger;
 
 
+/* The maximum output size to be used with CD media. This is also curbed
+   by BURN_OS_TRANSPORT_BUFFER_SIZE. The smaller number gets into effect.
+*/ 
+#define Libburn_cd_obS (32 * 1024)
+
+/* The size to be used with DVD media.
+*/
+#define Libburn_dvd_obS (32 * 1024)
+
+/* The size to be used with BD-RE media in normal, not streamed mode.
+*/
+#define Libburn_bd_re_obS (32 * 1024)
+
+/* The size to be used with BD-RE media in streamed mode.
+*/
+#define Libburn_bd_re_streamed_obS (64 * 1024)
+
+
 static int type_to_ctrl(int mode)
 {
 	int ctrl = 0;
@@ -1511,7 +1529,7 @@ int burn_disc_setup_dvd_plus_r(struct burn_write_opts *o,
 }
 
 
-/* ts A61218 - A70129 */
+/* ts A61218 - A70415 */
 int burn_dvd_write_sync(struct burn_write_opts *o,
 				 struct burn_disc *disc)
 {
@@ -1523,6 +1541,9 @@ int burn_dvd_write_sync(struct burn_write_opts *o,
 
 	d->needs_close_session = 0;
 
+	/* buffer flush trigger for sector.c:get_sector() */
+	o->obs = Libburn_dvd_obS;
+
 	if (d->current_profile == 0x1a || d->current_profile == 0x12 ||
 	    d->current_profile == 0x43) { 
 		/* DVD+RW , DVD-RAM , BD-RE */
@@ -1539,6 +1560,13 @@ int burn_dvd_write_sync(struct burn_write_opts *o,
 			goto early_failure;
 		}
 		o->obs_pad = 0; /* no filling-up of track's last 32k buffer */
+		if (d->current_profile == 0x43) /* BD-RE */
+			o->obs = Libburn_bd_re_obS;
+		if (d->do_stream_recording) {
+			o->obs_pad = 1;
+			if (d->current_profile == 0x43) /* BD-RE */
+				o->obs = Libburn_bd_re_streamed_obS;
+		}
 
 	} else if (d->current_profile == 0x13) {
 		 /* DVD-RW Restricted Overwrite */
@@ -1611,7 +1639,11 @@ int burn_dvd_write_sync(struct burn_write_opts *o,
 		/* ??? padding needed ??? cowardly doing it for now */
 		o->obs_pad = 1; /* fill-up track's last 32k buffer */
 	}
-	o->obs = 32*1024; /* buffer flush trigger for sector.c:get_sector() */
+
+	sprintf(msg, "dvd/bd Profile= %2.2Xh , obs= %d , obs_pad= %d",
+		d->current_profile, o->obs, o->obs_pad);
+	libdax_msgs_submit(libdax_messenger, d->global_index, 0x00000002,
+		LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_ZERO, msg, 0, 0);
 
 	for (i = 0; i < disc->sessions; i++) {
 		/* update progress */
@@ -2001,6 +2033,16 @@ void burn_disc_write_sync(struct burn_write_opts *o, struct burn_disc *disc)
 		goto ex;
 	}
 
+	/* ts A70521 : Linux 2.4 USB audio fails with 64 kiB */
+	/* ts A80414 : might need 64 kiB for BD-RE streaming */
+        /* buffer flush trigger for sector.c:get_sector() */
+	o->obs = Libburn_cd_obS;
+
+	sprintf(msg, "cd Profile= %2.2Xh , obs= %d , obs_pad= %d",
+		d->current_profile, o->obs, o->obs_pad);
+	libdax_msgs_submit(libdax_messenger, d->global_index, 0x00000002,
+		LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_ZERO, msg, 0, 0);
+
 	/* ts A70218 */
 	if (o->write_type == BURN_WRITE_SAO) {
 		for (i = 0 ; i < disc->session[0]->tracks; i++) {