diff --git a/libburn/trunk/cdrskin/cdrskin_timestamp.h b/libburn/trunk/cdrskin/cdrskin_timestamp.h
index 620139a8..48e171d2 100644
--- a/libburn/trunk/cdrskin/cdrskin_timestamp.h
+++ b/libburn/trunk/cdrskin/cdrskin_timestamp.h
@@ -1 +1 @@
-#define Cdrskin_timestamP "2007.05.22.164850"
+#define Cdrskin_timestamP "2007.05.28.132412"
diff --git a/libburn/trunk/libburn/os-linux.h b/libburn/trunk/libburn/os-linux.h
index 5459d77b..bd91a343 100644
--- a/libburn/trunk/libburn/os-linux.h
+++ b/libburn/trunk/libburn/os-linux.h
@@ -42,7 +42,10 @@ 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
 
 
 /* To hold the index number of the most recently delivered address from
diff --git a/libburn/trunk/libburn/write.c b/libburn/trunk/libburn/write.c
index 8de70e91..5d804290 100644
--- a/libburn/trunk/libburn/write.c
+++ b/libburn/trunk/libburn/write.c
@@ -1765,9 +1765,6 @@ void burn_disc_write_sync(struct burn_write_opts *o, struct burn_disc *disc)
 		return;
 	}
 
-	/* ts A70521 : Linux 2.4 USB audio fails with 64 kiB */
-	o->obs = 32*1024; /* buffer flush trigger for sector.c:get_sector() */
-
 #ifndef Libburn_precheck_write_ruleS
 	/* <<< covered by burn_precheck_write() */
 	if (o->start_byte >= 0) {