diff --git a/Build/MQTTnet.nuspec b/Build/MQTTnet.nuspec
index cc9aeaa..25d1acf 100644
--- a/Build/MQTTnet.nuspec
+++ b/Build/MQTTnet.nuspec
@@ -11,6 +11,8 @@
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <description>MQTTnet is a high performance .NET library for MQTT based communication. It provides a MQTT client and a MQTT server (broker) and supports v3.1.0, v3.1.1 and v5.0.0 of the MQTT protocol.</description>
     <releaseNotes>
+* [Client] Improve connection stability (thanks to @jltjohanlindqvist).
+* [ManagedClient] Fixed a memory leak (thanks to @zawodskoj).
 * [Server] Added support for assigned client IDs (MQTTv5 only) (thanks to @bcrosnier).
     </releaseNotes>
     <copyright>Copyright Christian Kratky 2016-2019</copyright>
diff --git a/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs b/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs
index 50310be..add5f76 100644
--- a/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs
+++ b/Source/MQTTnet.Extensions.ManagedClient/ManagedMqttClient.cs
@@ -279,7 +279,7 @@ namespace MQTTnet.Extensions.ManagedClient
             }
             catch (Exception exception)
             {
-                _logger.Error(exception, "Unhandled exception while maintaining connection.");
+                _logger.Error(exception, "Error exception while maintaining connection.");
             }
             finally
             {
@@ -328,11 +328,11 @@ namespace MQTTnet.Extensions.ManagedClient
             }
             catch (MqttCommunicationException exception)
             {
-                _logger.Warning(exception, "Communication exception while maintaining connection.");
+                _logger.Warning(exception, "Communication error while maintaining connection.");
             }
             catch (Exception exception)
             {
-                _logger.Error(exception, "Unhandled exception while maintaining connection.");
+                _logger.Error(exception, "Error exception while maintaining connection.");
             }
         }
 
diff --git a/Source/MQTTnet/Client/MqttClient.cs b/Source/MQTTnet/Client/MqttClient.cs
index 527a5cd..c8aa859 100644
--- a/Source/MQTTnet/Client/MqttClient.cs
+++ b/Source/MQTTnet/Client/MqttClient.cs
@@ -284,7 +284,7 @@ namespace MQTTnet.Client
             }
             catch (Exception e)
             {
-                _logger.Warning(e, "Error while waiting for tasks.");
+                _logger.Warning(e, "Error while waiting for internal tasks.");
             }
             finally
             {
@@ -412,11 +412,11 @@ namespace MQTTnet.Client
                 }
                 else if (exception is MqttCommunicationException)
                 {
-                    _logger.Warning(exception, "MQTT communication exception while sending/receiving keep alive packets.");
+                    _logger.Warning(exception, "Communication error while sending/receiving keep alive packets.");
                 }
                 else
                 {
-                    _logger.Error(exception, "Unhandled exception while sending/receiving keep alive packets.");
+                    _logger.Error(exception, "Error exception while sending/receiving keep alive packets.");
                 }
 
                 if (!DisconnectIsPending())
@@ -470,11 +470,11 @@ namespace MQTTnet.Client
                 }
                 else if (exception is MqttCommunicationException)
                 {
-                    _logger.Warning(exception, "MQTT communication exception while receiving packets.");
+                    _logger.Warning(exception, "Communication error while receiving packets.");
                 }
                 else
                 {
-                    _logger.Error(exception, "Unhandled exception while receiving packets.");
+                    _logger.Error(exception, "Error while receiving packets.");
                 }
 
                 _packetDispatcher.Dispatch(exception);
@@ -542,11 +542,11 @@ namespace MQTTnet.Client
                 }
                 else if (exception is MqttCommunicationException)
                 {
-                    _logger.Warning(exception, "MQTT communication exception while receiving packets.");
+                    _logger.Warning(exception, "Communication error while receiving packets.");
                 }
                 else
                 {
-                    _logger.Error(exception, "Unhandled exception while receiving packets.");
+                    _logger.Error(exception, "Error while receiving packets.");
                 }
 
                 _packetDispatcher.Dispatch(exception);
@@ -597,7 +597,7 @@ namespace MQTTnet.Client
             }
             catch (Exception exception)
             {
-                _logger.Error(exception, "Unhandled exception while handling application message.");
+                _logger.Error(exception, "Error while handling application message.");
             }
         }