diff --git a/CHANGELOG b/CHANGELOG
index 8a559a2..9407ab6 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -1,3 +1,7 @@
+Ver.2.3.2:
+* improve quotes support, e.g. fix plasma crash
+* rewrite main widget to signal-slot update model
+
 Ver.2.3.1:
 - fix bug with no updates from configuration UI
 - fix invalid vertical tab parsing
diff --git a/sources/awesome-widget/package/contents/ui/main.qml b/sources/awesome-widget/package/contents/ui/main.qml
index 2f701e5..f4075ea 100644
--- a/sources/awesome-widget/package/contents/ui/main.qml
+++ b/sources/awesome-widget/package/contents/ui/main.qml
@@ -58,6 +58,7 @@ Item {
         "batInTooltipColor": plasmoid.configuration.batInTooltipColor
     }
 
+    signal dropSource(string sourceName)
     signal needUpdate
     signal sizeUpdate
 
@@ -85,7 +86,7 @@ Item {
             // FIXME: ugly workaround to make some sources working
             systemmonitorDE.interval = plasmoid.configuration.interval
 
-            if (AWKeys.setDataBySource(sourceName, data, settings)) disconnectSource(sourceName)
+            AWKeys.setDataBySource(sourceName, data, settings)
         }
 
         onSourceAdded: {
@@ -106,7 +107,7 @@ Item {
             // FIXME: ugly workaround to make some sources working
             extsysmonDE.interval = plasmoid.configuration.interval
 
-            if (AWKeys.setDataBySource(sourceName, data, settings)) needUpdate()
+            AWKeys.setDataBySource(sourceName, data, settings)
         }
     }
 
@@ -164,6 +165,16 @@ Item {
 //         plasmoid.setAction("report", i18n("Mail to developers"), "email")
         // init submodule
         Plasmoid.userConfiguringChanged(false)
+        // connect data
+        AWKeys.dropSourceFromDataengine.connect(dropSource)
+        AWKeys.needToBeUpdated.connect(needUpdate)
+    }
+
+    onDropSource: {
+        if (debug) console.log("[main::onDropSource]")
+        if (debug) console.log("[main::onDropSource] : Source " + sourceName)
+
+        systemmonitorDE.disconnectSource(sourceName)
     }
 
     onNeedUpdate: {
diff --git a/sources/awesome-widget/plugin/awkeys.cpp b/sources/awesome-widget/plugin/awkeys.cpp
index 3238160..9cd609c 100644
--- a/sources/awesome-widget/plugin/awkeys.cpp
+++ b/sources/awesome-widget/plugin/awkeys.cpp
@@ -355,17 +355,20 @@ QStringList AWKeys::getHddDevices()
 }
 
 
-bool AWKeys::setDataBySource(const QString sourceName, const QVariantMap data,
+void AWKeys::setDataBySource(const QString sourceName, const QVariantMap data,
                              const QVariantMap params)
 {
     if (debug) qDebug() << PDEBUG;
     if (debug) qDebug() << PDEBUG << ":" << "Source" << sourceName;
 
-    if (sourceName == QString("update")) return true;
+    if (sourceName == QString("update")) {
+        emit(needToBeUpdated());
+        return;
+    }
 
     // checking
-    if (!checkKeys(data)) return false;
-    if (keys.isEmpty()) return false;
+    if (!checkKeys(data)) return;
+    if (keys.isEmpty()) return;
 
     // regular expressions
     QRegExp cpuRegExp = QRegExp(QString("cpu/cpu.*/TotalLoad"));
@@ -653,11 +656,9 @@ bool AWKeys::setDataBySource(const QString sourceName, const QVariantMap data,
         values[QString("cuptime")].replace(QString("$mm"), QString("%1").arg(minutes, 2, 10, QChar('0')));
         values[QString("cuptime")].replace(QString("$m"), QString("%1").arg(minutes));
     } else {
-        if (debug) qDebug() << PDEBUG << ":" << "Source not found";
-        return true;
+        if (debug) qDebug() << PDEBUG << ":" << "Source" << sourceName << "not found";
+        emit(dropSourceFromDataengine(sourceName));
     }
-
-    return false;
 }
 
 
diff --git a/sources/awesome-widget/plugin/awkeys.h b/sources/awesome-widget/plugin/awkeys.h
index 095a75c..2fa7b32 100644
--- a/sources/awesome-widget/plugin/awkeys.h
+++ b/sources/awesome-widget/plugin/awkeys.h
@@ -63,7 +63,7 @@ public:
     Q_INVOKABLE void addDevice(const QString source);
     Q_INVOKABLE QStringList dictKeys(const bool sorted = false);
     Q_INVOKABLE QStringList getHddDevices();
-    Q_INVOKABLE bool setDataBySource(const QString sourceName, const QVariantMap data,
+    Q_INVOKABLE void setDataBySource(const QString sourceName, const QVariantMap data,
                                      const QVariantMap params);
     // values
     Q_INVOKABLE void graphicalValueByKey();
@@ -72,6 +72,10 @@ public:
     // configuration
     Q_INVOKABLE void editItem(const QString type);
 
+signals:
+    void dropSourceFromDataengine(const QString source);
+    void needToBeUpdated();
+
 private slots:
     void loadKeysFromCache();
     void reinitKeys();
diff --git a/sources/extsysmon/extquotes.cpp b/sources/extsysmon/extquotes.cpp
index 5a2b882..637851d 100644
--- a/sources/extsysmon/extquotes.cpp
+++ b/sources/extsysmon/extquotes.cpp
@@ -52,6 +52,9 @@ ExtQuotes::ExtQuotes(QWidget *parent, const QString quotesName, const QStringLis
     values[QString("price")] = 0.0;
     values[QString("pricechg")] = 0.0;
     values[QString("percpricechg")] = 0.0;
+
+    manager = new QNetworkAccessManager(this);
+    connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(quotesReplyReceived(QNetworkReply *)));
 }
 
 
@@ -59,6 +62,9 @@ ExtQuotes::~ExtQuotes()
 {
     if (debug) qDebug() << PDEBUG;
 
+    disconnect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(quotesReplyReceived(QNetworkReply *)));
+
+    delete manager;
     delete ui;
 }
 
@@ -235,13 +241,11 @@ void ExtQuotes::readConfiguration()
 QMap<QString, float> ExtQuotes::run()
 {
     if (debug) qDebug() << PDEBUG;
-    if (!m_active) return values;
+    if ((!m_active) || (isRunning)) return values;
 
     if (times == 1) {
         if (debug) qDebug() << PDEBUG << ":" << "Send request";
-        QNetworkAccessManager *manager = new QNetworkAccessManager(this);
-        connect(manager, SIGNAL(finished(QNetworkReply *)), this, SLOT(quotesReplyReceived(QNetworkReply *)));
-
+        isRunning = true;
         QNetworkReply *reply = manager->get(QNetworkRequest(QUrl(url())));
         new QReplyTimeout(reply, 1000);
     }
@@ -351,6 +355,8 @@ void ExtQuotes::quotesReplyReceived(QNetworkReply *reply)
     values[QString("pricechg")] = values[QString("price")] == 0 ? 0.0 : value - values[QString("price")];
     values[QString("percpricechg")] = 100 * values[QString("pricechg")] / values[QString("price")];
     values[QString("price")] = value;
+
+    isRunning = false;
 }
 
 
diff --git a/sources/extsysmon/extquotes.h b/sources/extsysmon/extquotes.h
index 13fade2..5a1ae8f 100644
--- a/sources/extsysmon/extquotes.h
+++ b/sources/extsysmon/extquotes.h
@@ -96,6 +96,8 @@ private:
     QString m_fileName;
     QStringList m_dirs;
     bool debug;
+    QNetworkAccessManager *manager;
+    bool isRunning = false;
     Ui::ExtQuotes *ui;
     QString url();
     // properties