diff --git a/resources/desktop/com.github.rssguard.appdata.xml b/resources/desktop/com.github.rssguard.appdata.xml
index db56d6755..85711a815 100644
--- a/resources/desktop/com.github.rssguard.appdata.xml
+++ b/resources/desktop/com.github.rssguard.appdata.xml
@@ -26,7 +26,7 @@
   <url type="donation">https://github.com/sponsors/martinrotter</url>
   <content_rating type="oars-1.1" />
   <releases>
-    <release version="4.1.2" date="2022-02-21"/>
+    <release version="4.1.2" date="2022-02-22"/>
   </releases>
   <content_rating type="oars-1.0">
     <content_attribute id="violence-cartoon">none</content_attribute>
diff --git a/src/librssguard/core/feeddownloader.cpp b/src/librssguard/core/feeddownloader.cpp
index d8363c0f0..3fc79da22 100644
--- a/src/librssguard/core/feeddownloader.cpp
+++ b/src/librssguard/core/feeddownloader.cpp
@@ -422,45 +422,57 @@ bool FeedDownloader::isCacheSynchronizationRunning() const {
 
 void FeedDownloader::removeDuplicateMessages(QList<Message>& messages) {
   auto idx = 0;
+
   while (idx < messages.size()) {
     Message& message = messages[idx];
     std::function<bool(const Message& a, const Message& b)> is_duplicate;
+
     if (message.m_id > 0) {
       is_duplicate = [](const Message& a, const Message& b) {
-        return a.m_id == b.m_id;
-      };
+                       return a.m_id == b.m_id;
+                     };
     }
     else if (message.m_customId.isEmpty()) {
       is_duplicate = [](const Message& a, const Message& b) {
-        return std::tie(a.m_title, a.m_url, a.m_author) == std::tie(b.m_title, b.m_url, b.m_author);
-      };
+                       return std::tie(a.m_title, a.m_url, a.m_author) == std::tie(b.m_title, b.m_url, b.m_author);
+                     };
     }
     else {
       is_duplicate = [](const Message& a, const Message& b) {
-        return a.m_customId == b.m_customId;
-      };
+                       return a.m_customId == b.m_customId;
+                     };
     }
+
     auto next_idx = idx + 1; // Index of next message to check after removing all duplicates.
     auto last_idx = idx; // Index of the last kept duplicate.
+
     idx = next_idx;
 
     // Remove all duplicate messages, and keep the message with the latest created date.
     // If the created date is identical for all duplicate messages then keep the last message in the list.
     while (idx < messages.size()) {
       auto& last_duplicate = messages[last_idx];
+
       if (is_duplicate(last_duplicate, messages[idx])) {
         if (last_duplicate.m_created <= messages[idx].m_created) {
           // The last seen message was created earlier or at the same date -- keep the current, and remove the last.
+          qWarningNN << LOGSEC_CORE << "Removing article" << QUOTE_W_SPACE(last_duplicate.m_title)
+                     << "before saving articles to DB, because it is duplicate.";
+
           messages.removeAt(last_idx);
           if (last_idx + 1 == next_idx) {
             // The `next_idx` was pointing to the message following the duplicate. With that duplicate removed the
             // next index needs to be adjusted.
             next_idx = last_idx;
           }
+
           last_idx = idx;
           ++idx;
         }
         else {
+          qWarningNN << LOGSEC_CORE << "Removing article" << QUOTE_W_SPACE(messages[idx].m_title)
+                     << "before saving articles to DB, because it is duplicate.";
+
           messages.removeAt(idx);
         }
       }
diff --git a/src/librssguard/core/feeddownloader.h b/src/librssguard/core/feeddownloader.h
index 7bed58667..d35556cbf 100644
--- a/src/librssguard/core/feeddownloader.h
+++ b/src/librssguard/core/feeddownloader.h
@@ -59,7 +59,7 @@ class FeedDownloader : public QObject {
                        const QHash<ServiceRoot::BagOfMessages, QStringList>& stated_messages,
                        const QHash<QString, QStringList>& tagged_messages);
     void finalizeUpdate();
-    static void removeDuplicateMessages(QList<Message>& messages);
+    void removeDuplicateMessages(QList<Message>& messages);
 
     bool m_isCacheSynchronizationRunning;
     bool m_stopCacheSynchronization;
diff --git a/src/librssguard/definitions/definitions.h b/src/librssguard/definitions/definitions.h
index fcc1c65fd..0b4a22892 100644
--- a/src/librssguard/definitions/definitions.h
+++ b/src/librssguard/definitions/definitions.h
@@ -103,16 +103,25 @@
 
 #define CLI_VER_SHORT     "v"
 #define CLI_VER_LONG      "version"
+
 #define CLI_HELP_SHORT    "h"
 #define CLI_HELP_LONG     "help"
+
 #define CLI_LOG_SHORT     "l"
 #define CLI_LOG_LONG      "log"
+
 #define CLI_DAT_SHORT     "d"
 #define CLI_DAT_LONG      "data"
+
 #define CLI_SIN_SHORT     "s"
 #define CLI_SIN_LONG      "no-single-instance"
-#define CLI_NDEBUG_SHORT  "n"
+
+#define CLI_NSTDOUTERR_SHORT  "n"
+#define CLI_NSTDOUTERR_LONG   "no-standard-output"
+
+#define CLI_NDEBUG_SHORT  "g"
 #define CLI_NDEBUG_LONG   "no-debug-output"
+
 #define CLI_QUIT_INSTANCE "q"
 #define CLI_IS_RUNNING    "a"
 
diff --git a/src/librssguard/gui/settings/settingsgui.cpp b/src/librssguard/gui/settings/settingsgui.cpp
index d5c81fb56..bb04d3d86 100644
--- a/src/librssguard/gui/settings/settingsgui.cpp
+++ b/src/librssguard/gui/settings/settingsgui.cpp
@@ -35,7 +35,7 @@ SettingsGui::SettingsGui(Settings* settings, QWidget* parent) : SettingsPanel(se
                                      << tr("Author"));
 
 #if !defined(Q_OS_UNIX) || defined(Q_OS_MACOS)
-  m_ui->m_tabUi->setTabVisible(m_ui->m_tabUi->indexOf(m_ui->m_taskBar), false);
+  m_ui->m_tabUi->setTabVisible(m_ui->m_tabUi->indexOf(m_ui->m_tabTaskBar), false);
 #endif
 
   m_ui->m_helpCustomSkinColors->setHelpText(tr("You can override some colors defined by your skin here. "
diff --git a/src/librssguard/gui/settings/settingsgui.ui b/src/librssguard/gui/settings/settingsgui.ui
index 8271a06c7..e63b0b53e 100644
--- a/src/librssguard/gui/settings/settingsgui.ui
+++ b/src/librssguard/gui/settings/settingsgui.ui
@@ -199,6 +199,20 @@
        </item>
       </layout>
      </widget>
+     <widget class="QWidget" name="m_tabTaskBar">
+      <attribute name="title">
+       <string>Task bar</string>
+      </attribute>
+      <layout class="QFormLayout" name="formLayout_5">
+       <item row="0" column="0">
+        <widget class="QCheckBox" name="m_displayUnreadMessageCountOnTaskBar">
+         <property name="text">
+          <string>Display count of unread messages</string>
+         </property>
+        </widget>
+       </item>
+      </layout>
+     </widget>
      <widget class="QWidget" name="m_tabTabs">
       <attribute name="title">
        <string>Tabs</string>
@@ -410,24 +424,6 @@
        </item>
       </layout>
      </widget>
-     <widget class="QWidget" name="m_taskBar">
-      <attribute name="title">
-       <string>Task bar</string>
-      </attribute>
-      <widget class="QCheckBox" name="m_displayUnreadMessageCountOnTaskBar">
-       <property name="geometry">
-        <rect>
-         <x>10</x>
-         <y>10</y>
-         <width>321</width>
-         <height>25</height>
-        </rect>
-       </property>
-       <property name="text">
-        <string>Display count of unread messages</string>
-       </property>
-      </widget>
-     </widget>
     </widget>
    </item>
   </layout>
diff --git a/src/librssguard/miscellaneous/application.cpp b/src/librssguard/miscellaneous/application.cpp
index 5e06db68a..a1610dc4d 100644
--- a/src/librssguard/miscellaneous/application.cpp
+++ b/src/librssguard/miscellaneous/application.cpp
@@ -25,6 +25,7 @@
 
 #include <iostream>
 
+#include <QLoggingCategory>
 #include <QProcess>
 #include <QSessionManager>
 #include <QSslSocket>
@@ -795,10 +796,13 @@ void Application::parseCmdArgumentsFromMyInstance() {
                                         QSL("user-data-folder"));
   QCommandLineOption disable_singleinstance({ QSL(CLI_SIN_SHORT), QSL(CLI_SIN_LONG) },
                                             QSL("Allow running of multiple application instances."));
-  QCommandLineOption disable_debug({ QSL(CLI_NDEBUG_SHORT), QSL(CLI_NDEBUG_LONG) },
+  QCommandLineOption disable_only_debug({ QSL(CLI_NDEBUG_SHORT), QSL(CLI_NDEBUG_LONG) },
+                                        QSL("Disable just \"debug\" outputs."));
+  QCommandLineOption disable_debug({ QSL(CLI_NSTDOUTERR_SHORT), QSL(CLI_NSTDOUTERR_LONG) },
                                    QSL("Completely disable stdout/stderr outputs."));
 
-  m_cmdParser.addOptions({ help, version, log_file, custom_data_folder, disable_singleinstance, disable_debug });
+  m_cmdParser.addOptions({ help, version, log_file, custom_data_folder,
+                           disable_singleinstance, disable_only_debug, disable_debug });
   m_cmdParser.addPositionalArgument(QSL("urls"),
                                     QSL("List of URL addresses pointing to individual online feeds which should be added."),
                                     QSL("[url-1 ... url-n]"));
@@ -818,6 +822,10 @@ void Application::parseCmdArgumentsFromMyInstance() {
     s_customLogFile.chop(1);
   }
 
+  if (m_cmdParser.isSet(QSL(CLI_NDEBUG_SHORT))) {
+    QLoggingCategory::setFilterRules(QSL("*.debug=false"));
+  }
+
   if (!m_cmdParser.value(QSL(CLI_DAT_SHORT)).isEmpty()) {
     auto data_folder = QDir::toNativeSeparators(m_cmdParser.value(QSL(CLI_DAT_SHORT)));
 
@@ -843,7 +851,7 @@ void Application::parseCmdArgumentsFromMyInstance() {
     qDebugNN << LOGSEC_CORE << "Explicitly allowing this instance to run.";
   }
 
-  if (m_cmdParser.isSet(QSL(CLI_NDEBUG_SHORT))) {
+  if (m_cmdParser.isSet(QSL(CLI_NSTDOUTERR_SHORT))) {
     s_disableDebug = true;
     qDebugNN << LOGSEC_CORE << "Disabling any stdout/stderr outputs.";
   }
diff --git a/src/librssguard/miscellaneous/feedreader.cpp b/src/librssguard/miscellaneous/feedreader.cpp
index cf31d3333..38d76ab71 100644
--- a/src/librssguard/miscellaneous/feedreader.cpp
+++ b/src/librssguard/miscellaneous/feedreader.cpp
@@ -61,10 +61,10 @@ QList<ServiceEntryPoint*> FeedReader::feedServices() {
     m_feedServices.append(new FeedlyEntryPoint());
     m_feedServices.append(new GmailEntryPoint());
     m_feedServices.append(new GreaderEntryPoint());
-    m_feedServices.append(new NewsBlurEntryPoint());
     m_feedServices.append(new OwnCloudServiceEntryPoint());
 
 #if defined(DEBUG)
+    m_feedServices.append(new NewsBlurEntryPoint());
     m_feedServices.append(new RedditEntryPoint());
 #endif