diff --git a/xorriso/xorriso_timestamp.h b/xorriso/xorriso_timestamp.h
index 278170ce..272ac3f3 100644
--- a/xorriso/xorriso_timestamp.h
+++ b/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.08.17.162834"
+#define Xorriso_timestamP "2009.08.18.173453"
diff --git a/xorriso/xorrisoburn.c b/xorriso/xorrisoburn.c
index d03c48e3..f82bb7b2 100644
--- a/xorriso/xorrisoburn.c
+++ b/xorriso/xorrisoburn.c
@@ -938,6 +938,7 @@ int Xorriso_assert_volid(struct XorrisO *xorriso, int msc1, int flag)
 int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
 {
  int ret, hret, not_writeable= 0, has_what, aquire_flag, load_lba, ext;
+ int lba, track, session, params_flag, adr_mode, read_ret;
  uint32_t size;
  struct burn_drive_info *dinfo= NULL, *out_dinfo, *in_dinfo;
  struct burn_drive *drive, *out_drive, *in_drive;
@@ -949,7 +950,6 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
  size_t value_length;
  char *value= NULL;
  double num;
- int lba, track, session, params_flag, adr_mode;
  char volid[33], adr_data[163], *adr_pt;
 
  if((flag&3)==0) { 
@@ -1160,7 +1160,7 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
      goto ex;
  }
 
- ret= isoburn_read_image(drive, ropts, &volset);
+ read_ret= ret= isoburn_read_image(drive, ropts, &volset);
 
  /* <<< Resetting to normal thresholds */
  if(xorriso->img_read_error_mode>0)
@@ -1175,9 +1175,16 @@ int Xorriso_aquire_drive(struct XorrisO *xorriso, char *adr, int flag)
    if(xorriso->img_read_error_mode==2)
      sev= "FATAL";
    Xorriso_msgs_submit(xorriso, 0, xorriso->info_text, 0, sev, 0);
-   if(xorriso->img_read_error_mode!=0)
-     Xorriso_msgs_submit(xorriso, 0, "You might get a partial or altered ISO image tree by option -error_behavior 'image_loading' 'best_effort'",
+   if(read_ret == ISO_SB_TREE_CORRUPTED && (xorriso->do_md5 & 1)) {
+     Xorriso_msgs_submit(xorriso, 0,
+           "You might get a questionable ISO image tree by option -md5 'off'.",
+            0, "HINT", 0);
+   } else if(xorriso->img_read_error_mode!=0) {
+     Xorriso_msgs_submit(xorriso, 0, "You might get a partial or altered ISO image tree by option -error_behavior 'image_loading' 'best_effort' if -abort_on is set to be tolerant enough.",
                          0, "HINT", 0);
+   }
+
+
    ret= 3; goto ex;
  }
  Xorriso_pacifier_callback(xorriso, "nodes read", xorriso->pacifier_count, 0,
@@ -9203,7 +9210,7 @@ int Xorriso_check_interval(struct XorrisO *xorriso, struct SpotlisT *spotlist,
                            int from_lba, int block_count, int read_chunk,
                            int md5_start, int flag)
 {
- int i, j, k, ret, total_count= 0, sectors= -1, sector_size= -1, skip_reading;
+ int i, j, ret, total_count= 0, sectors= -1, sector_size= -1, skip_reading;
  int prev_quality= -1, quality= -1, retry= 0, profile_no, is_cd= 0;
  int start_sec, end_sec, first_value, fret;
  char profile_name[80];
@@ -9445,15 +9452,12 @@ abort_check:;
              }
              iso_md5_end(&cloned_ctx, md5);
 
-             for(k= 0; k < 16; k++)
-               if(tag_md5[k] != md5[k])
-             break;
              if(ret == ISO_MD5_AREA_CORRUPTED) {
                comparison= "CORRUPTED";
                sev_text= "WARNING";
                md5_spot_value= Xorriso_read_quality_md5_mismatcH;
                chain_broken= 1;
-             } else if(k < 16 ) {
+             } else if(! iso_md5_match(tag_md5, md5)) {
                comparison= "NON-MATCHING";
                sev_text= "WARNING";
                md5_spot_value= Xorriso_read_quality_md5_mismatcH;
@@ -12292,7 +12296,7 @@ ex:;
 int Xorriso_check_md5(struct XorrisO *xorriso, void *in_node, char *path,
                       int flag)
 {
- int i, ret, wanted, rret;
+ int ret, wanted, rret;
  IsoImage *image;
  IsoNode *node;
  IsoFile *file;
@@ -12361,10 +12365,7 @@ int Xorriso_check_md5(struct XorrisO *xorriso, void *in_node, char *path,
      goto ex;
 
  /* Report outcome */
- for(i= 0; i < 16; i++)
-   if(node_md5[i] != data_md5[i])
- break;
- if(i < 16 ) {
+ if(! iso_md5_match(node_md5, data_md5)) {
    sprintf(xorriso->result_line, "MD5 MISMATCH: ");
    Text_shellsafe(path, xorriso->result_line, 1);
    strcat(xorriso->result_line, "\n");
@@ -12391,7 +12392,7 @@ ex:;
 int Xorriso_check_md5_range(struct XorrisO *xorriso, off_t start_lba,
                             off_t end_lba, char md5[16], int flag)
 {
- int ret, i;
+ int ret;
  struct burn_drive_info *dinfo= NULL;
  struct burn_drive *drive= NULL;
  off_t pos, data_count, to_read;
@@ -12422,11 +12423,8 @@ int Xorriso_check_md5_range(struct XorrisO *xorriso, off_t start_lba,
                              xorriso->pacifier_count, 0, "", 0);
  }
  iso_md5_end(&ctx, data_md5);
- for(i= 0; i < 16; i++)
-   if(md5[i] != data_md5[i])
- break;
  ret= 1;
- if(i < 16 )
+ if(! iso_md5_match(md5, data_md5))
    ret= 0;
 ex:;
  Xorriso_process_msg_queues(xorriso,0);