diff --git a/xorriso/xorriso.c b/xorriso/xorriso.c
index a012eea2..f1c9e8af 100644
--- a/xorriso/xorriso.c
+++ b/xorriso/xorriso.c
@@ -7510,7 +7510,7 @@ cannot_address:;
      for(i= 0; i<r1; i++) {
        if(buf1[i]!=buf2[i]) {
          if(first_diff<0)
-           first_diff= i;
+           first_diff= r1count - r1 + i;
          diffcount++;
        }
      }
diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 86525bb6..b032f79f 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.09.20.092811"
+#define Xorriso_timestamP "2009.09.20.110715"
diff --git a/xorriso/xorrisoburn.c b/xorriso/xorrisoburn.c
index 19a91974..e04ae352 100644
--- a/xorriso/xorrisoburn.c
+++ b/xorriso/xorrisoburn.c
@@ -8931,9 +8931,11 @@ int Xorriso_burn_track(struct XorrisO *xorriso, off_t write_start_address,
  }
  if(do_isosize && xorriso->fs < 64)
    xorriso->fs= 64;
- fifo_src= burn_fifo_source_new(data_src, 2048, xorriso->fs, 0);
+ fifo_src= burn_fifo_source_new(data_src, 2048 + 8 * !!(flag & 4),
+                                xorriso->fs, 0);
  if(fifo_src == NULL) {
-   sprintf(xorriso->info_text, "Could not create fifo object of 4 MB");
+   sprintf(xorriso->info_text, "Could not create fifo object of %.f MB",
+           ((double) xorriso->fs) / 1024.0 / 1024.0);
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, "FATAL", 0);
    ret= 0; goto ex;
  }