diff --git a/data/simpledb/blockchain.txt b/data/simpledb/blockchain.txt
new file mode 100644
index 0000000..769a4cb
--- /dev/null
+++ b/data/simpledb/blockchain.txt
@@ -0,0 +1 @@
+000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f 0
diff --git a/data/simpledb/blocks/639340_00000000000000000009e3d7be64b2b867231436a3e689a0a4fabdff77398960 b/data/simpledb/blocks/639340_00000000000000000009e3d7be64b2b867231436a3e689a0a4fabdff77398960
new file mode 100644
index 0000000..2c5d1e0
Binary files /dev/null and b/data/simpledb/blocks/639340_00000000000000000009e3d7be64b2b867231436a3e689a0a4fabdff77398960 differ
diff --git a/data/simpledb/blocks/639341_00000000000000000009f0147b38b7a37c5a8947fb18486e651274a97e4fe3d0 b/data/simpledb/blocks/639341_00000000000000000009f0147b38b7a37c5a8947fb18486e651274a97e4fe3d0
new file mode 100644
index 0000000..d71ddd0
Binary files /dev/null and b/data/simpledb/blocks/639341_00000000000000000009f0147b38b7a37c5a8947fb18486e651274a97e4fe3d0 differ
diff --git a/data/simpledb/blocks/639342_0000000000000000000f953352fedd34f666244750ea7e59c5fc35dd1b4c4ada b/data/simpledb/blocks/639342_0000000000000000000f953352fedd34f666244750ea7e59c5fc35dd1b4c4ada
new file mode 100644
index 0000000..a571cd6
Binary files /dev/null and b/data/simpledb/blocks/639342_0000000000000000000f953352fedd34f666244750ea7e59c5fc35dd1b4c4ada differ
diff --git a/data/simpledb/blocks/639343_0000000000000000000f3346aa83aea5d35498357be2728f86090729e4a526a4 b/data/simpledb/blocks/639343_0000000000000000000f3346aa83aea5d35498357be2728f86090729e4a526a4
new file mode 100644
index 0000000..3e587a5
Binary files /dev/null and b/data/simpledb/blocks/639343_0000000000000000000f3346aa83aea5d35498357be2728f86090729e4a526a4 differ
diff --git a/include/daemonize.h b/include/daemonize.h
index 62adbbd..b229bce 100644
--- a/include/daemonize.h
+++ b/include/daemonize.h
@@ -2,5 +2,6 @@
 #define __MY_DAEMONIZE_H__
 
 void daemonize();
+void log_signal_message(char*, char*);
 
 #endif
diff --git a/src/daemonize.c b/src/daemonize.c
index 73e717a..8c9e03f 100644
--- a/src/daemonize.c
+++ b/src/daemonize.c
@@ -10,7 +10,7 @@
 
 #define RUNNING_DIR "/tmp"
 #define LOCK_FILE "/tmp/daemond.lock"
-#define LOG_FILE "daemond.log"
+#define LOG_FILE "/tmp/daemond.log"
 
 /*
  *       daemon.c
@@ -33,35 +33,48 @@
  *       MA 02110-1301, USA.
  */
 
+void log_signal_message(char *filename,char *message){
+    FILE *logfile;
+    logfile = fopen(filename,"a");
+    if(!logfile) return;
+    fprintf(logfile,"%s",message);
+    fclose(logfile);
+}
+
+int lfp;
+void close_lock_file()
+{
+    close(lfp);
+    remove(LOCK_FILE);
+}
+
 void daemonize(){
-    int i,lfp;
+    int pid;
+    int i;
     char str[10];
 
-    if(getppid() == 1)
-        return;
+    pid = getppid();
+    if(pid == 1) return;
 
-    i = fork();
+    pid = fork();
+    if(pid < 0) exit(1);
+    if(pid > 0) exit(0);
 
-    if(i < 0)
-        exit(1);
-    if(i > 0)
-        exit(0);
     setsid();
 
-    for(i = getdtablesize(); i >= 0; --i)
-        close(i);
+    for(i = getdtablesize(); i >= 0; --i) close(i);
 
-    i = open("/dev/null",O_RDWR);
-    dup(i);
-    dup(i);
+    lfp = open("/dev/null",O_RDWR);
+    dup(lfp);
+    dup(lfp);
     umask(022);
 
     lfp = open(LOCK_FILE,O_RDWR|O_CREAT,0640);
-    if(lfp < 0)
-        exit(1);
-    if(lockf(lfp,F_TLOCK,0) < 0)
-        exit(1);
+    if(lfp < 0) exit(1);
+    if(lockf(lfp,F_TLOCK,0) < 0) exit(1);
 
     sprintf(str,"%d\n",getpid());
     write(lfp,str,strlen(str));
-}
\ No newline at end of file
+
+    atexit(close_lock_file);
+}
diff --git a/src/spy.c b/src/spy.c
index b8d3791..4c646ba 100644
--- a/src/spy.c
+++ b/src/spy.c
@@ -692,9 +692,6 @@ int init_blockchain_file()
 
             request_headers_or_blocks_hash_init = true;
             cb_handshake_done_bestknownheight = block_height;
-
-            fclose(blockchain_fd);
-            blockchain_fd = NULL;
         }
     }
 
diff --git a/src/test_daemonize.c b/src/test_daemonize.c
index 843b33e..8c72aa2 100644
--- a/src/test_daemonize.c
+++ b/src/test_daemonize.c
@@ -14,6 +14,10 @@
  * Les outils
  */
 static void signal_handler(int sig){
+    char msg[200];
+    sprintf(msg,"process %d signal %d trapped\n", getpid(), sig);
+    log_signal_message("/tmp/daemonize.log", msg);
+
     switch(sig){
     case SIGUSR1:
         // signal USR1