diff -Nuar chestnut-dialer-0.3.3.orig/chestnut_dialer/connection.py chestnut-dialer-0.3.3/chestnut_dialer/connection.py
--- chestnut-dialer-0.3.3.orig/chestnut_dialer/connection.py	2007-02-20 10:34:16.000000000 +0200
+++ chestnut-dialer-0.3.3/chestnut_dialer/connection.py	2013-05-02 15:49:47.000000000 +0300
@@ -202,6 +200,7 @@
       except OSError: 
 	debug_msg(_("cannot chagne file permitions on '%s'") % file_name, 2)
     return (file_name, f)
+  
   def _connection_init(self):
     account = self.account
     if not self._callback_answer_mode:
@@ -380,19 +380,46 @@
       self.pppd_exit_code = code / 256
       return 0
     return 1
+  
   def iteration(self):
-    account = self.account    
+    account = self.account
+    
+    # Vladimir Smolyar, 02.05.2013: Check whether the interface is (still) up
+    if not (self.linkname and re.search(r'<UP',
+	  commands.getoutput(
+	    "%s %s 2> /dev/null" % (chestnut_dialer.config.ifconfig, self.linkname)), re.M)):
+	self._interface_up = 0
+
+        
     if not self._interface_up:
       pppd_kiled = 0
       buf = ""
-      t = time.time()      
+      t = time.time()
       while time.time() - t < 0.1:
         if select.select([self._pppd_pty], [], [], 0.02)[0]:
           try: buf += os.read(self._pppd_pty, 1)
 	  except OSError: break
-        else:	 
+        else:
 	  break
+
       if buf == "" and not self._is_pppd_live(): pppd_kiled = 1
+      # Vladimir Smolyar, 02.05.2013:
+      elif buf =="":
+          # the buffer is empty
+          if self.connected:
+              #chestnut-dialer believes that it is connected, but
+              # 1) the _interface_up = 0
+              # 2) buf == ""
+              # So let's check if the pppd is reconnecting already:
+              if select.select([self._pppd_pty], [], [], 20)[0]:
+                  # yes, it is reconnecting just now
+                  return
+              # no, it is not reconnecting while it should. 
+              # So let's send a signal to it
+              debug_msg("Sending SIGHUP",3)
+              os.kill(self._pppd, signal.SIGHUP)
+
+      
       if len(buf):
         buf = buf.replace("\r", "") 
 	self.text_queue.put(buf)
@@ -401,6 +428,7 @@
 	self._pppd_chars = lines[-1]
 	lines[-1:] = []
 	for s in lines:	  
+          #killing because of a low speed
           if not self.speed:
 	    m = self._speed_re.match(s)
 	    if m: 
@@ -474,7 +503,22 @@
 	self.connected = 1
 	if account['connect_program']:
           os.system(account['connect_program'])
+      else:
+          # the interface is down, thus it is not connected
+          self.connected = 0
+
       if not pppd_kiled: return
+
+    # Vladimir Smolyar, 02.05.2013: 
+    # Deleting the chat and password temporary files moved down,
+    # after the pppd is surely killed.
+    # Otherwise it leads to an error when pppd wishes to reconnect and
+    # cannot find the temporary chat file.
+    
+    if self._is_pppd_live(): return
+
+    # Vladimir Smolyar, 02.05.2013:
+    # deleting the chat and password temporary files
     if self._chat_temp_file:
       debug_msg(_("removing chat temp file"), 3)
       os.unlink(self._chat_temp_file)
@@ -483,7 +527,8 @@
       debug_msg(_("removing password temp file"), 3)
       os.unlink(self._passwd_temp_file)
       self._passwd_temp_file = None
-    if self._is_pppd_live(): return
+    
+    
     os.close(self._pppd_pty)
     if self._passwdfdr:
       try: os.close(self._passwdfdr)
diff -Nuar chestnut-dialer-0.3.3.orig/chestnut_dialer/gtk2_ui/application.py chestnut-dialer-0.3.3/chestnut_dialer/gtk2_ui/application.py
--- chestnut-dialer-0.3.3.orig/chestnut_dialer/gtk2_ui/application.py	2007-02-19 02:05:09.000000000 +0200
+++ chestnut-dialer-0.3.3/chestnut_dialer/gtk2_ui/application.py	2013-05-02 15:43:09.000000000 +0300
@@ -270,8 +270,14 @@
     self.set_mode("Connecting")
     self.set_icon("connecting")
     self.update_main_window_title()
+ 
+    # Vladimir Smolyar, 02.05.2013: 
+    # delete the timer in order to avoid multiple connection monitor timers
+    if self.connection_monitor_tid != None:
+        gobject.source_remove(self.connection_monitor_tid)
     self.connection_monitor_tid = gobject.timeout_add(300, self.gtk_timeout,
         self.connection_monitor_signal)
+  
   def on_connection_setup(self):
     self.set_mode("Status")
     self.set_icon("connected")
@@ -281,14 +287,20 @@
     self.connection_monitor_tid = gobject.timeout_add(
         int(self.config.monitor_period * 1000),
         self.gtk_timeout, self.connection_monitor_signal)
+    # Vladimir Smolyar, 02.05.2013: 
+    # delete the timer in order to avoid multiple status update timers
+    if self.update_status_tid != None:
+        gobject.source_remove(self.update_status_tid)
     self.update_status_tid = gobject.timeout_add(
       int(self.config.status_refresh_period * 1000), 
       self.update_status_monitor)
+  
   def on_connection_setup_extra(self):
     try: action = self.config.gtk2_ui.on_connect
     except AttributeError: action = ""
     if action == "iconify" and self.main_window:
       self.main_window.iconify()
+  
   def on_connection_stop(self, reason):
     gobject.source_remove(self.connection_monitor_tid)
     if self.update_status_tid != None: