diff --git a/bin/cc-server b/bin/cc-server
index d282bf95d14cbe82eb4b4a129465c11208f80b5b..6ed7af5d72bd33e7bdd1fe1b89f4d85820ec0a40 100755
--- a/bin/cc-server
+++ b/bin/cc-server
@@ -28,7 +28,7 @@ DEFAULT_CONFIGURATION = {
     'pidfile': '',
     'umask': '0177',
     'port': 1984,
-    'verbosity': 0,
+    'debug': False,
     'account_db': None, # None = mandatory option
     'interface': '127.0.0.1',
     'ssl_cert': None,
@@ -60,15 +60,9 @@ class EncodingFormatter(logging.Formatter, object):
 def run_server(options):
 
     # Setup logging facility:
-    level = logging.ERROR
-    verb = int(options['verbosity'])
-    if verb:
-        if verb == 1:
-            level = logging.WARNING
-        elif verb == 2:
-            level = logging.INFO
-        else:
-            level = logging.DEBUG
+    level = logging.INFO
+    if options['debug'] in (True, 'yes', 'true'):
+        level = logging.DEBUG
 
     logger = logging.getLogger()
     logger.setLevel(level)
@@ -106,9 +100,9 @@ def run_server(options):
     try:
         server.run()
     except Exception as err:
+        logging.critical('Server failed: %s', err)
         import traceback
         traceback.print_exc(file=sys.stdout)
-        logging.critical('Server fail: %s' % err)
         sys.exit(3)
 
 if __name__ == '__main__':
diff --git a/ccserver/ccserver.py b/ccserver/ccserver.py
index 6204754a547757d344962e6876a11aeb23ef6b2b..28f3d025be0033115cd437e04a080e78c1a908fc 100644
--- a/ccserver/ccserver.py
+++ b/ccserver/ccserver.py
@@ -55,12 +55,14 @@ class CCServer(object):
         sock.bind((address, port))
         sock.listen(CCServer.LISTEN_BACKLOG)
 
+        logging.info('Server started to running')
+
         if certfile:
             logging.info('SSL Certificate: %s', certfile)
         if keyfile:
             logging.info('SSL Key: %s', certfile)
 
-        logging.info('Started to listen on %s port %s', address, port)
+        logging.info('Listening on %s:%s', address, port)
 
         self.objects = ObjectsDB(self)
 
@@ -184,7 +186,7 @@ class CCServer(object):
         Run the server mainloop.
         '''
 
-        logging.info('Running manager mainloop')
+        logging.debug('Running manager mainloop')
         self.manager.run()
 
     def get_connection(self, login):
diff --git a/ccserver/handlers.py b/ccserver/handlers.py
index db19e2901fe9c6eea53c6494643c99d1b423f5dd..f956874e51f5578c9d95645671a82c5330e80b97 100644
--- a/ccserver/handlers.py
+++ b/ccserver/handlers.py
@@ -93,6 +93,8 @@ class CCHandler(RpcHandler):
 class OnlineCCHandler(CCHandler):
 
     def on_disconnect(self, conn):
+        client = self._server.search_client_by_connection(conn)
+        logging.info('Client %s disconnected', client.login)
         self._server.unregister(conn)
 
     def _check(self, conn, method, tql=None):
@@ -693,6 +695,7 @@ class WelcomeHandler(CCHandler):
         :thrown AuthenticationError: when authentication fail
         '''
 
+        logmsg = 'Authentication error from %s: '
         conf = self._server.conf
         with conf:
             try:
@@ -701,21 +704,29 @@ class WelcomeHandler(CCHandler):
                 raise AuthenticationError('Unknown login')
             else:
                 if 'close' in self._server.conf.show(login)['tags']:
+                    logging.warning(logmsg + 'account closed (%s)',
+                                    conn.getpeername(), login)
                     raise AuthenticationError('Account is closed')
 
         if role is None:
-            logging.info('New authentication from %s: failure',
-                         login.encode('ascii', 'ignore'))
+            logging.warning(logmsg + 'bad login/password (%s)',
+                            conn.getpeername(), login)
             raise AuthenticationError('Bad login/password')
         else:
             if role not in WelcomeHandler.ROLES:
+                logging.warning(logmsg + 'bad role in account config (%s)',
+                                conn.getpeername(), login)
                 raise BadRoleError('%r is not a legal role' % role)
             
             # If authentication is a success, try to register the client:
             try:
                 self._server.register(login, role, conn)
             except AlreadyRegistered:
+                logging.warning(logmsg + 'already connected (%s)',
+                                conn.getpeername(), login)
                 raise AuthenticationError('Already connected')
             conn.set_handler(WelcomeHandler.ROLES.get(role)(self._server))
-            
+
+            logging.info('Authentication success from %s with login %s',
+                         conn.getpeername(), login)
             return role
diff --git a/ccserver/objectsdb.py b/ccserver/objectsdb.py
index 801b0557ca1475ee22f9e1d4344d645df251a303..088e07e430b152456216d1e9352759c9edb084d7 100644
--- a/ccserver/objectsdb.py
+++ b/ccserver/objectsdb.py
@@ -164,7 +164,7 @@ class ObjectsDB(object):
         for msg in msgs:
             # Update tags if received from the peer:
             if msg.get('error') is not None:
-                logging.error('Error from client while getting tags')
+                logging.warning('Error from client while getting tags')
             else:
                 returned = msg['return']
                 obj = msg['data']