diff --git a/cdrskin/cdrskin_timestamp.h b/cdrskin/cdrskin_timestamp.h
index 5276f4f..ec55482 100644
--- a/cdrskin/cdrskin_timestamp.h
+++ b/cdrskin/cdrskin_timestamp.h
@@ -1 +1 @@
-#define Cdrskin_timestamP "2007.09.18.130344"
+#define Cdrskin_timestamP "2007.09.18.200343"
diff --git a/libburn/libdax_msgs.h b/libburn/libdax_msgs.h
index bcfdd19..5d7205a 100644
--- a/libburn/libdax_msgs.h
+++ b/libburn/libdax_msgs.h
@@ -430,6 +430,9 @@ Range "scdbackup"          :  0x00020000 to 0x0002ffff
  0x0002014a (SORRY,HIGH)   = Cannot read desired amount of data
  0x0002014b (SORRY,HIGH)   = Drive is already registered resp. scanned
  0x0002014c (FATAL,HIGH)   = Emulated drive caught in SCSI function
+ 0x0002014d (SORRY,HIGH)   = Asynchromous SCSI error
+ 0x0002014f (SORRY,HIGH)   = Timeout with asynchromous SCSI command
+ 0x00020150 (DEBUG,LOW)    = Reporting asynchronous waiting time
 
 
  libdax_audioxtr:
diff --git a/libburn/mmc.c b/libburn/mmc.c
index 8b44064..52e9cd4 100644
--- a/libburn/mmc.c
+++ b/libburn/mmc.c
@@ -444,9 +444,12 @@ void mmc_close(struct burn_drive *d, int session, int track)
 	d->issue_command(d, &c);
 
 	/* ts A70918 : Immed : wait for drive to complete command */
-	usleep(1000000); /* (in format() there was a race condition) */
-	while (!d->test_unit_ready(d))
-		usleep(100000);
+	if (c.error) {
+		d->cancel = 1;
+		return;
+	}
+	if (spc_wait_unit_attention(d, 3600, "CLOSE TRACK SESSION", 0) <= 0)
+		d->cancel = 1;
 }
 
 void mmc_get_event(struct burn_drive *d)
@@ -2273,6 +2276,9 @@ void mmc_sync_cache(struct burn_drive *d)
 	c.oplen = sizeof(MMC_SYNC_CACHE);
 */
 	c.retry = 1;
+
+	c.opcode[1] |= 2; /* ts A70918 : Immed */
+
 	c.page = NULL;
 	c.dir = NO_TRANSFER;
 
@@ -2294,6 +2300,14 @@ void mmc_sync_cache(struct burn_drive *d)
 	}
 
 	d->issue_command(d, &c);
+
+	/* ts A70918 */
+	if (c.error) {
+		d->cancel = 1;
+		return;
+	}
+	if (spc_wait_unit_attention(d, 3600, "SYNCHRONIZE CACHE", 0) <= 0)
+		d->cancel = 1;
 }
 
 
diff --git a/libburn/sbc.c b/libburn/sbc.c
index 3424bc1..1e9d229 100644
--- a/libburn/sbc.c
+++ b/libburn/sbc.c
@@ -36,9 +36,16 @@ void sbc_load(struct burn_drive *d)
 	c.page = NULL;
 */
 	c.retry = 1;
+
+	c.opcode[1] |= 1; /* ts A70918 : Immed */
+
 	c.dir = NO_TRANSFER;
 	d->issue_command(d, &c);
-	spc_wait_unit_attention(d, 60);
+	if (c.error)
+		return;
+	/* 5 minutes for loading. If this does not suffice then other commands
+	   shall fail righteously. */
+	spc_wait_unit_attention(d, 300, "START UNIT (+ LOAD)", 0);
 }
 
 void sbc_eject(struct burn_drive *d)
@@ -54,9 +61,16 @@ void sbc_eject(struct burn_drive *d)
 	c.oplen = sizeof(SBC_UNLOAD);
 	c.page = NULL;
 */
+
+	c.opcode[1] |= 1; /* ts A70918 : Immed */
+
 	c.page = NULL;
 	c.dir = NO_TRANSFER;
 	d->issue_command(d, &c);
+	if (c.error)
+		return;
+	/* Wait long. A late eject could surprise or hurt user. */
+	spc_wait_unit_attention(d, 1800, "STOP UNIT (+ EJECT)", 0);
 }
 
 /* ts A61118 : is it necessary to tell the drive to get ready for use ? */
@@ -74,9 +88,14 @@ int sbc_start_unit(struct burn_drive *d)
 	c.page = NULL;
 */
 	c.retry = 1;
+
+	c.opcode[1] |= 1; /* ts A70918 : Immed */
+
 	c.dir = NO_TRANSFER;
 	d->issue_command(d, &c);
-	return (c.error==0);
+	if (c.error)
+		return 0;
+	return spc_wait_unit_attention(d, 1800, "START UNIT", 0);
 }
 
 
diff --git a/libburn/spc.c b/libburn/spc.c
index c8b0acc..024653d 100644
--- a/libburn/spc.c
+++ b/libburn/spc.c
@@ -98,19 +98,52 @@ int spc_test_unit_ready(struct burn_drive *d)
 
 
 /* ts A70315 */
+/** @param flag bit0=do not wait 0.1 seconds before first test unit ready */
 /** Wait until the drive state becomes clear or until max_usec elapsed */
-int spc_wait_unit_attention(struct burn_drive *d, int max_sec)
+int spc_wait_unit_attention(struct burn_drive *d, int max_sec, char *cmd_text,
+				int flag)
 {
 	int i, ret, key, asc, ascq;
+	char msg[160];
 
-	for(i=0; i < max_sec; i++) {
+	if (!(flag & 1))
+		usleep(100000);
+	for(i = !(flag & 1); i < max_sec * 10; i++) {
 		ret = spc_test_unit_ready_r(d, &key, &asc, &ascq);
-		if(ret > 0 || key!=0x2 || asc!=0x4) /* ready or error */
+		if(ret > 0) /* ready */
 	break;
-		usleep(1000000);
+		if(key!=0x2 || asc!=0x4) {
+			if (key == 0x2 && asc == 0x3A) {
+				ret = 1; /* medium not present = ok */
+	break;
+			}
+			if (key == 0x6 && asc == 0x28 && ascq == 0x00)
+	continue;			 /* media change notice = try again */
+			sprintf(msg,
+		"Asynchromous SCSI error on %s: key=%X asc=%2.2Xh ascq=%2.2Xh",
+			 	cmd_text, (unsigned) key, (unsigned) asc,
+				(unsigned) ascq);
+			libdax_msgs_submit(libdax_messenger, d->global_index,
+				0x0002014d,
+				LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH,
+				msg, 0, 0);
+			d->cancel = 1;
+	break;
+		}
+		usleep(100000);
 	}
-	if (i < max_sec)
+	sprintf(msg, "Async %s %s after %d.%d seconds",
+		cmd_text, (ret > 0 ? "succeeded" : "failed"), i / 10, i % 10);
+	libdax_msgs_submit(libdax_messenger, d->global_index, 0x00020150,
+		LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_LOW, msg, 0, 0);
+
+	if (i < max_sec * 10)
 		return (ret > 0);
+
+	sprintf(msg, "Timeout (%d s) with asynchronous SCSI command %s\n",
+	 	max_sec, cmd_text);
+	libdax_msgs_submit(libdax_messenger, d->global_index, 0x0002014f,
+		LIBDAX_MSGS_SEV_SORRY, LIBDAX_MSGS_PRIO_HIGH, msg, 0, 0);
 	return 0;
 }
 
diff --git a/libburn/spc.h b/libburn/spc.h
index 2275f6b..81d2d46 100644
--- a/libburn/spc.h
+++ b/libburn/spc.h
@@ -28,7 +28,8 @@ int spc_test_unit_ready(struct burn_drive *d);
 
 /* ts A70315 */
 /** Wait until the drive state becomes clear in or until max_sec elapsed */
-int spc_wait_unit_attention(struct burn_drive *d, int max_sec);
+int spc_wait_unit_attention(struct burn_drive *d, int max_sec, char *cmd_text,
+				int flag);
 
 /* ts A61021 : the spc specific part of sg.c:enumerate_common()
 */