diff --git a/libisoburn/trunk/xorriso/xorriso.1 b/libisoburn/trunk/xorriso/xorriso.1
index 26405026..dcaebeb6 100644
--- a/libisoburn/trunk/xorriso/xorriso.1
+++ b/libisoburn/trunk/xorriso/xorriso.1
@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH XORRISO 1 "May 14, 2009"
+.TH XORRISO 1 "May 17, 2009"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -1288,6 +1288,12 @@ is performed if the decision is "yes" or "true". See operator -if.
 \fB\-true\fR and \fB\-false\fR :
 Always match resp. match not. Evaluation goes on.
 .br
+\fB\-sort_lba\fR :
+Always match. This causes -find to perform its action in a sequence sorted by
+the ISO image block addresses of the files. It may improve throughput with
+actions which read data from optical drives. Action will always get the
+absolute path as parameter.
+.br
 Available operators are:
 .br
 \fB\-not\fR :
diff --git a/libisoburn/trunk/xorriso/xorriso.c b/libisoburn/trunk/xorriso/xorriso.c
index 3eb9f7d9..dbd4c6bc 100644
--- a/libisoburn/trunk/xorriso/xorriso.c
+++ b/libisoburn/trunk/xorriso/xorriso.c
@@ -2898,12 +2898,17 @@ int Findjob_new_node(struct FindjoB *job, struct ExprnodE **fnode,
 }
 
 
-/* If an operator is expected : use -and */
+/* If an operator is expected : use -and
+   @param flag bit0= prepare for a pseudo-test:
+                     if an operator is expected, do nothing and return 2
+*/
 int Findjob_default_and(struct FindjoB *o, int flag)
 {
  int ret;
 
  if(Findjob_cursor_complete(o, 0)) {
+   if(flag & 1) 
+     return(2);
    ret= Findjob_and(o, 0);
    if(ret <= 0)
      return(ret);
@@ -3212,6 +3217,8 @@ int Findjob_set_file_type(struct FindjoB *o, char file_type, int flag)
 
  
 /* @param value -1= only without property, 1= only with property
+   @param flag bit0= pseudo-test:
+                     if no operator is open, do nothing and return 2
 */
 int Findjob_set_prop_filter(struct FindjoB *o, int test_type, int value,
                             int flag)
@@ -3219,8 +3226,8 @@ int Findjob_set_prop_filter(struct FindjoB *o, int test_type, int value,
  struct ExprtesT *t;
  int ret;
 
- ret= Findjob_default_and(o, 0);
- if(ret <= 0)
+ ret= Findjob_default_and(o, flag & 1);
+ if(ret <= 0 || ret == 2)
    return(ret);
 
  t= o->cursor->test;
@@ -3359,12 +3366,14 @@ int Findjob_set_decision(struct FindjoB *o, char *decision, int flag)
 
 
 /* @param value -1= true, 1= false
+   @param flag bit0= pseudo-test:
+                     if no operator is open, do nothing and return 2
 */
 int Findjob_set_false(struct FindjoB *o, int value, int flag)
 {
  int ret;
 
- ret= Findjob_set_prop_filter(o, 0, value, 0);
+ ret= Findjob_set_prop_filter(o, 0, value, flag & 1);
  return(ret);
 }
 
@@ -14765,6 +14774,7 @@ ex:;
                      do not reset find_compare_result
                bit2= do not count deleted files with rm and rm_r
                bit3= use Xorriso_findi_sorted() rather than Xorriso_findi()
+                     (this can also be ordered by test -sort_lba)
 */
 int Xorriso_option_find(struct XorrisO *xorriso, int argc, char **argv,
                        int *idx, int flag)
@@ -14905,6 +14915,12 @@ not_enough_arguments:;
 
 #endif /* Xorriso_findjob_on_expR */
 
+   } else if(strcmp(argv[i], "-sort_lba") == 0) {
+     flag|= 8;
+     /* If an operator is open: insert a -true test, else do nothing */
+     ret= Findjob_set_false(job, -1, 1);
+     if(ret == 2)
+       ret= 1;
    } else if(strcmp(argv[i], "-exec")==0) {
      if(i+1>=end_idx) {
 not_enough_exec_arguments:;
@@ -15103,7 +15119,7 @@ sorry_ex:;
                       0);
  else if(flag & 8) {
    cpt= start_path;
-   ret= Xorriso_findi_sorted(xorriso, first_job, 1, &cpt, 0);
+   ret= Xorriso_findi_sorted(xorriso, first_job, (off_t) 0, 1, &cpt, 0);
  } else
    ret= Xorriso_findi(xorriso, first_job, NULL, (off_t) 0, NULL,
                       start_path, &dir_stbuf, 0, (flag&4)>>1);
@@ -18855,9 +18871,6 @@ next_command:;
  } else if(strcmp(cmd,"find")==0 || strcmp(cmd,"findi")==0) {
    ret= Xorriso_option_find(xorriso, argc, argv, idx, 0);
 
- } else if(strcmp(cmd,"find_sorted")==0) {
-   ret= Xorriso_option_find(xorriso, argc, argv, idx, 8);
-
  } else if(strcmp(cmd,"findx")==0) {
    ret= Xorriso_option_find(xorriso, argc, argv, idx, 1);
 
diff --git a/libisoburn/trunk/xorriso/xorriso_timestamp.h b/libisoburn/trunk/xorriso/xorriso_timestamp.h
index ced79313..930788a1 100644
--- a/libisoburn/trunk/xorriso/xorriso_timestamp.h
+++ b/libisoburn/trunk/xorriso/xorriso_timestamp.h
@@ -1 +1 @@
-#define Xorriso_timestamP "2009.05.16.165940"
+#define Xorriso_timestamP "2009.05.17.115101"
diff --git a/libisoburn/trunk/xorriso/xorrisoburn.c b/libisoburn/trunk/xorriso/xorrisoburn.c
index d3025618..a2dae3ec 100644
--- a/libisoburn/trunk/xorriso/xorrisoburn.c
+++ b/libisoburn/trunk/xorriso/xorrisoburn.c
@@ -7345,23 +7345,32 @@ int Xorriso__findi_sorted_cmp(const void *p1, const void *p2)
                bit1= do not perform job->action on resulting node array
 */
 int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
-                         int filec, char **filev, int flag)
+                         off_t boss_mem, int filec, char **filev, int flag)
 {
  int i, ret;
- struct FindjoB array_job;
+ struct FindjoB array_job, *proxy_job= NULL, *hindmost= NULL, *hmboss= NULL;
  struct stat dir_stbuf;
  IsoNode *node;
  char abs_path[SfileadrL];
+ off_t mem_needed= 0;
+
+ array_job.start_path= NULL;
 
- /* <<< */
  if(job->action>=9 && job->action<=13) { /* actions which have own findjobs */
-
-   /* >>> cannot deal with chained find yet */;
-
-   return(-1);
+   /* array_job replaces the hindmost job in the chain */
+   for(hindmost= job; hindmost->subjob != NULL; hindmost= hindmost->subjob)
+     hmboss= hindmost;
+   if(hmboss == NULL)
+     {ret= -1; goto ex;}
+   memcpy(&array_job, hindmost, sizeof(struct FindjoB));
+   hmboss->subjob= &array_job;
+   proxy_job= job;
+ } else {
+   memcpy(&array_job, job, sizeof(struct FindjoB));
+   proxy_job= &array_job;
+   hindmost= job;
  }
- /* >>> if action == find : array_job would need to replace the hindmost  */
- memcpy(&array_job, job, sizeof(struct FindjoB));
+ array_job.start_path= NULL; /* is owned by the original, not by array_job */
 
  /* Count matching nodes */
  Xorriso_destroy_node_array(xorriso, 0);
@@ -7371,14 +7380,37 @@ int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
      xorriso->node_counter++;
  continue;
    }
-   array_job.start_path= filev[i];
-   ret= Xorriso_findi(xorriso, &array_job, NULL, (off_t) 0, NULL,
+   ret= Findjob_set_start_path(proxy_job, filev[i], 0);
+   if(ret <= 0)
+     goto ex;
+   ret= Xorriso_findi(xorriso, proxy_job, NULL, boss_mem, NULL,
                       filev[i],  &dir_stbuf, 0, 0);
    if(ret <= 0)
      goto ex;
  }
  if(xorriso->node_counter <= 0)
-   return(1);
+   {ret= 1; goto ex;}
+
+ mem_needed= boss_mem + xorriso->node_counter * sizeof(IsoNode *);
+ if(!(flag &1)) {
+   ret= Xorriso_check_temp_mem_limit(xorriso, mem_needed, 0);
+   if(ret <= 0) {
+     /* Memory curbed : Perform unsorted find jobs */
+     if(hmboss != NULL)
+       hmboss->subjob= hindmost;
+     for(i= 0; i < filec; i++) {
+       ret= Findjob_set_start_path(job, filev[i], 0);
+       if(ret <= 0)
+         goto ex;
+       ret= Xorriso_findi(xorriso, job, NULL, boss_mem, NULL,
+                          filev[i], &dir_stbuf, 0, 0);
+       if(ret <= 0)
+         if(Xorriso_eval_problem_status(xorriso, ret, 1|2)<0)
+           goto ex;
+     }
+     {ret= 1; goto ex;}
+   }
+ }
 
  /* Copy matching nodes into allocated array */
  xorriso->node_array_size= xorriso->node_counter;
@@ -7399,8 +7431,10 @@ int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
 
  continue;
    }
-   array_job.start_path= filev[i];
-   ret= Xorriso_findi(xorriso, &array_job, NULL, (off_t) 0, NULL,
+   ret= Findjob_set_start_path(proxy_job, filev[i], 0);
+   if(ret <= 0)
+     goto ex;
+   ret= Xorriso_findi(xorriso, proxy_job, NULL, mem_needed, NULL,
                       filev[i], &dir_stbuf, 0, 0);
    if(ret <= 0)
      goto ex;
@@ -7409,18 +7443,15 @@ int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
        Xorriso__findi_sorted_cmp);
 
  if(flag & 2)
-   return(1);
-
- /* Perform job->action on xorriso->node_array */;
-
- /* >>> if action == find : perform action of the hindmost */
+   {ret= 1; goto ex;}
 
+ /* Perform job->action on xorriso->node_array */
  for(i= 0; i < xorriso->node_counter; i++) {
    node= xorriso->node_array[i];
    ret= Xorriso_path_from_node(xorriso, node, abs_path, 0);
    if(ret <= 0)
      goto ex;
-   ret= Xorriso_findi_action(xorriso, job, NULL, (off_t) 0,
+   ret= Xorriso_findi_action(xorriso, hindmost, NULL, (off_t) 0,
                              abs_path, abs_path, node, 0, 1);
    if(ret <= 0)
      if(Xorriso_eval_problem_status(xorriso, ret, 1|2)<0)
@@ -7429,6 +7460,10 @@ int Xorriso_findi_sorted(struct XorrisO *xorriso, struct FindjoB *job,
 
  ret= 1;
 ex:;
+ if(hmboss != NULL)
+   hmboss->subjob= hindmost;
+ if(array_job.start_path != NULL)
+   free(array_job.start_path);
  return(ret);
 }