diff --git a/datacontainer.cpp b/datacontainer.cpp
index 457d8c53d..15b897f0a 100644
--- a/datacontainer.cpp
+++ b/datacontainer.cpp
@@ -70,7 +70,7 @@ void DataContainer::clearData()
 void DataContainer::checkForUpdate()
 {
     if (d->dirty) {
-        emit updated(objectName(), d->data);
+        emit dataUpdated(objectName(), d->data);
 
         foreach (SignalRelay* relay, d->relays) {
             relay->checkQueueing();
@@ -103,7 +103,7 @@ bool DataContainer::hasUpdates() const
 void DataContainer::checkUsage()
 {
     if (d->relays.count() < 1 &&
-        receivers(SIGNAL(updated(QString, Plasma::DataEngine::Data))) < 1) {
+        receivers(SIGNAL(dataUpdated(QString, Plasma::DataEngine::Data))) < 1) {
         // DO NOT CALL ANYTHING AFTER THIS LINE AS IT MAY GET DELETED!
         emit unused(objectName());
     }
@@ -120,8 +120,8 @@ void DataContainer::connectVisualization(QObject* visualization, uint updateInte
         SignalRelay *relay = objIt.value();
         if (relay) {
             // connected to a relay
-            disconnect(relay, SIGNAL(updated(QString,Plasma::DataEngine::Data)),
-                    visualization, SLOT(updated(QString,Plasma::DataEngine::Data)));
+            disconnect(relay, SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data)),
+                    visualization, SLOT(dataUpdated(QString,Plasma::DataEngine::Data)));
 
             if (relay->isUnused()) {
                 d->relays.remove(relay->m_interval);
@@ -135,8 +135,8 @@ void DataContainer::connectVisualization(QObject* visualization, uint updateInte
             //kDebug() << "     already connected, nothing to do";
             return;
         } else {
-            disconnect(this, SIGNAL(updated(QString,Plasma::DataEngine::Data)),
-                       visualization, SLOT(updated(QString,Plasma::DataEngine::Data)));
+            disconnect(this, SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data)),
+                       visualization, SLOT(dataUpdated(QString,Plasma::DataEngine::Data)));
         }
     }
 
@@ -149,13 +149,13 @@ void DataContainer::connectVisualization(QObject* visualization, uint updateInte
 
     if (updateInterval < 1) {
 //        kDebug() << "    connecting directly";
-        connect(this, SIGNAL(updated(QString,Plasma::DataEngine::Data)),
-                visualization, SLOT(updated(QString,Plasma::DataEngine::Data)));
+        connect(this, SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data)),
+                visualization, SLOT(dataUpdated(QString,Plasma::DataEngine::Data)));
     } else {
 //        kDebug() << "    connecting to a relay";
         connect(d->signalRelay(this, visualization, updateInterval, alignment),
-                SIGNAL(updated(QString,Plasma::DataEngine::Data)),
-                visualization, SLOT(updated(QString,Plasma::DataEngine::Data)));
+                SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data)),
+                visualization, SLOT(dataUpdated(QString,Plasma::DataEngine::Data)));
     }
 }
 
@@ -165,12 +165,12 @@ void DataContainer::disconnectVisualization(QObject* visualization)
 
     if (objIt == d->relayObjects.end() || !objIt.value()) {
         // it is connected directly to the DataContainer itself
-        disconnect(this, SIGNAL(updated(QString,Plasma::DataEngine::Data)),
-                   visualization, SLOT(updated(QString,Plasma::DataEngine::Data)));
+        disconnect(this, SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data)),
+                   visualization, SLOT(dataUpdated(QString,Plasma::DataEngine::Data)));
     } else {
         SignalRelay *relay = objIt.value();
-        disconnect(relay, SIGNAL(updated(QString,Plasma::DataEngine::Data)),
-                   visualization, SLOT(updated(QString,Plasma::DataEngine::Data)));
+        disconnect(relay, SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data)),
+                   visualization, SLOT(dataUpdated(QString,Plasma::DataEngine::Data)));
 
         if (relay->isUnused()) {
             d->relays.remove(relay->m_interval);
diff --git a/datacontainer.h b/datacontainer.h
index c1963badf..55d161e89 100644
--- a/datacontainer.h
+++ b/datacontainer.h
@@ -118,7 +118,7 @@ class PLASMA_EXPORT DataContainer : public QObject
          * Emitted when the data has been updated, allowing visualization to
          * reflect the new data.
          **/
-        void updated(const QString& source, const Plasma::DataEngine::Data& data);
+        void dataUpdated(const QString& source, const Plasma::DataEngine::Data& data);
 
         /**
          * Emitted when this source becomes unused
diff --git a/datacontainer_p.h b/datacontainer_p.h
index 339392e9b..22c75f3c3 100644
--- a/datacontainer_p.h
+++ b/datacontainer_p.h
@@ -69,7 +69,7 @@ public:
 
     bool isUnused()
     {
-        return receivers(SIGNAL(updated(QString,Plasma::DataEngine::Data))) < 1;
+        return receivers(SIGNAL(dataUpdated(QString,Plasma::DataEngine::Data))) < 1;
     }
 
     void checkAlignment()
@@ -100,7 +100,7 @@ public:
 
     void checkQueueing() {
         if (m_queued) {
-            emit updated(dc->objectName(), d->data);
+            emit dataUpdated(dc->objectName(), d->data);
             m_queued = false;
             //TODO: should we re-align our timer at this point, to avoid
             //      constant queueing due to more-or-less constant time
@@ -126,7 +126,7 @@ public:
     bool m_queued;
 
 signals:
-    void updated(const QString&, const Plasma::DataEngine::Data&);
+    void dataUpdated(const QString&, const Plasma::DataEngine::Data&);
 
 protected:
     void timerEvent(QTimerEvent *event)
@@ -144,10 +144,10 @@ protected:
         emit dc->requestUpdate(dc);
         if (!dc->hasUpdates()) {
             // the source wasn't actually updated; so let's put ourselves in the queue
-            // so we get an updated() when the data does arrive
+            // so we get an dataUpdated() when the data does arrive
             m_queued = true;
         } else {
-            emit updated(dc->objectName(), d->data);
+            emit dataUpdated(dc->objectName(), d->data);
         }
         event->accept();
     }
diff --git a/dataengine.cpp b/dataengine.cpp
index c5d9c2394..34c1756a7 100644
--- a/dataengine.cpp
+++ b/dataengine.cpp
@@ -101,7 +101,7 @@ class DataEngine::Private
 
             s->connectVisualization(visualization, updateInterval, align);
 
-            QMetaObject::invokeMethod(visualization, "updated",
+            QMetaObject::invokeMethod(visualization, "dataUpdated",
                                       Q_ARG(QString, s->objectName()),
                                       Q_ARG(Plasma::DataEngine::Data, s->data()));
         }
diff --git a/dataengine.h b/dataengine.h
index d7aa11e36..394ef9ee5 100644
--- a/dataengine.h
+++ b/dataengine.h
@@ -81,7 +81,7 @@ class PLASMA_EXPORT DataEngine : public QObject
          * Connects a source to an object for data updates. The object must
          * have a slot with the following signature:
          *
-         * updated(const QString &sourceName, const Plasma::DataEngine::Data &data)
+         * dataUpdated(const QString &sourceName, const Plasma::DataEngine::Data &data)
          *
          * The data is a QHash of QVariants keyed by QString names, allowing
          * one data source to provide sets of related data.
@@ -105,7 +105,7 @@ class PLASMA_EXPORT DataEngine : public QObject
          * Connects all sources to an object for data updates. The object must
          * have a slot with the following signature:
          *
-         * SLOT(updated(QString, Plasma::DataEngine::Data))
+         * SLOT(dataUpdated(QString, Plasma::DataEngine::Data))
          *
          * The data is a QHash of QVariants keyed by QString names, allowing
          * one data source to provide sets of related data.
@@ -137,7 +137,7 @@ class PLASMA_EXPORT DataEngine : public QObject
          * Retrevies a pointer to the DataContainer for a given source. This method
          * should not be used if possible. An exception is for script engines that 
          * can not provide a QMetaObject as required by connectSource for the initial
-         * call to updated(). Using this method, such engines can provide their own
+         * call to dataUpdated. Using this method, such engines can provide their own
          * connectSource API.
          *
          * @arg source the name of the source.
@@ -371,7 +371,7 @@ class PLASMA_EXPORT DataEngine : public QObject
         /**
          * Call this method when you call setData directly on a DataContainer instead
          * of using the DataEngine::setData methods.
-         * If this method is not called, no updated(..) signals will be emitted!
+         * If this method is not called, no dataUpdated(..) signals will be emitted!
          */
         void checkForUpdates();
 
diff --git a/widgets/checkbox.cpp b/widgets/checkbox.cpp
index abffa5fac..926bb97bd 100644
--- a/widgets/checkbox.cpp
+++ b/widgets/checkbox.cpp
@@ -119,7 +119,7 @@ void CheckBox::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *op
     widget-> style()->drawControl(QStyle::CE_CheckBox, &options, painter, widget);
 }
 
-void CheckBox::updated(const QString&, const DataEngine::Data& data)
+void CheckBox::dataUpdated(const QString&, const DataEngine::Data& data)
 {
     foreach (const QVariant& variant, data) {
         if (variant.canConvert(QVariant::Bool)) {
diff --git a/widgets/checkbox.h b/widgets/checkbox.h
index f7144bc4b..2647e4da3 100644
--- a/widgets/checkbox.h
+++ b/widgets/checkbox.h
@@ -100,7 +100,7 @@ public:
 */
 
 public Q_SLOTS:
-    void updated(const QString&, const DataEngine::Data&);
+    void dataUpdated(const QString&, const DataEngine::Data&);
 
 Q_SIGNALS:
     /**
diff --git a/widgets/lineedit.cpp b/widgets/lineedit.cpp
index 979d7a5dc..068b9d93c 100644
--- a/widgets/lineedit.cpp
+++ b/widgets/lineedit.cpp
@@ -97,7 +97,7 @@ void LineEdit::paintWidget(QPainter *painter, const QStyleOptionGraphicsItem *op
     QGraphicsTextItem::paint(painter, style, widget);
 }
 
-void LineEdit::updated(const QString&, const DataEngine::Data& data)
+void LineEdit::dataUpdated(const QString&, const DataEngine::Data& data)
 {
     DataEngine::DataIterator it(data);
 
diff --git a/widgets/lineedit.h b/widgets/lineedit.h
index bb2035416..f43a2f309 100644
--- a/widgets/lineedit.h
+++ b/widgets/lineedit.h
@@ -88,7 +88,7 @@ class PLASMA_EXPORT LineEdit : public QGraphicsTextItem, public LayoutItem
         void textChanged(const QString &text);
 
     public Q_SLOTS:
-        void updated(const QString&, const Plasma::DataEngine::Data&);
+        void dataUpdated(const QString&, const Plasma::DataEngine::Data&);
 
     private:
         class Private;
diff --git a/widgets/meter.cpp b/widgets/meter.cpp
index ec8988e2a..699c61e1b 100644
--- a/widgets/meter.cpp
+++ b/widgets/meter.cpp
@@ -205,7 +205,7 @@ Qt::Alignment Meter::labelAlignment(int index) const
     return d->alignments[index];
 }
 
-void Meter::updated(QString sourceName, Plasma::DataEngine::Data data)
+void Meter::dataUpdated(QString sourceName, Plasma::DataEngine::Data data)
 {
     Q_UNUSED(sourceName)
 
diff --git a/widgets/meter.h b/widgets/meter.h
index 84bdc7730..4c2cc1ed1 100644
--- a/widgets/meter.h
+++ b/widgets/meter.h
@@ -192,7 +192,7 @@ public Q_SLOTS:
     /**
      * Used when connecting to a DataEngine
      */
-    void updated(QString sourceName, Plasma::DataEngine::Data data);
+    void dataUpdated(QString sourceName, Plasma::DataEngine::Data data);
 
 protected:
     /**
diff --git a/widgets/radiobutton.cpp b/widgets/radiobutton.cpp
index efe9a4f27..640ab3f33 100644
--- a/widgets/radiobutton.cpp
+++ b/widgets/radiobutton.cpp
@@ -149,9 +149,17 @@ void RadioButton::setText(const QString &text)
     update();
 }
 
-void RadioButton::updated(const QString&, const Plasma::DataEngine::Data &data)
+void RadioButton::dataUpdated(const QString&, const Plasma::DataEngine::Data &data)
 {
-    Q_UNUSED(data);
+    DataEngine::DataIterator it(data);
+
+    while (it.hasNext()) {
+        it.next();
+        if (it.value().canConvert(QVariant::Bool)) {
+            setChecked(it.value().toBool());
+            return;
+        }
+    }
 }
 
 void RadioButton::mousePressEvent(QGraphicsSceneMouseEvent *event)
diff --git a/widgets/radiobutton.h b/widgets/radiobutton.h
index e90037479..0f123b6bb 100644
--- a/widgets/radiobutton.h
+++ b/widgets/radiobutton.h
@@ -71,7 +71,7 @@ public:
     void setText(const QString &text);
 
 public Q_SLOTS:
-    void updated(const QString&, const Plasma::DataEngine::Data &data);
+    void dataUpdated(const QString&, const Plasma::DataEngine::Data &data);
 
 Q_SIGNALS:
     void clicked();