diff --git a/kdecore/auth/AuthBackend.cpp b/kdecore/auth/AuthBackend.cpp
index 13243a97..934105f1 100644
--- a/kdecore/auth/AuthBackend.cpp
+++ b/kdecore/auth/AuthBackend.cpp
@@ -23,47 +23,14 @@
 namespace KAuth
 {
 
-class AuthBackend::Private
-{
-public:
-    Private() {}
-    virtual ~Private() {}
-
-    Capabilities capabilities;
-};
-
 AuthBackend::AuthBackend()
     : QObject(0)
-    , d(new Private)
 {
 
 }
 
 AuthBackend::~AuthBackend()
 {
-    delete d;
-}
-
-AuthBackend::Capabilities AuthBackend::capabilities() const
-{
-    return d->capabilities;
-}
-
-void AuthBackend::setCapabilities(AuthBackend::Capabilities capabilities)
-{
-    d->capabilities = capabilities;
-}
-
-bool AuthBackend::actionExists(const QString& action)
-{
-    Q_UNUSED(action);
-    return false;
-}
-
-void AuthBackend::preAuthAction(const QString& action, QWidget* parent)
-{
-    Q_UNUSED(action)
-    Q_UNUSED(parent)
 }
 
 } //namespace KAuth
diff --git a/kdecore/auth/AuthBackend.h b/kdecore/auth/AuthBackend.h
index a86732e3..8c5144d4 100644
--- a/kdecore/auth/AuthBackend.h
+++ b/kdecore/auth/AuthBackend.h
@@ -34,41 +34,19 @@ class AuthBackend : public QObject
     Q_DISABLE_COPY(AuthBackend)
 
 public:
-    enum Capability {
-        NoCapability = 0,
-        AuthorizeFromClientCapability = 1,
-        AuthorizeFromHelperCapability = 2,
-        CheckActionExistenceCapability = 4,
-        PreAuthActionCapability = 8
-    };
-    Q_DECLARE_FLAGS(Capabilities, Capability)
-
     AuthBackend();
     virtual ~AuthBackend();
-    virtual void setupAction(const QString &action) = 0;
-    virtual void preAuthAction(const QString &action, QWidget *parent);
+
     virtual Action::AuthStatus authorizeAction(const QString &action) = 0;
     virtual Action::AuthStatus actionStatus(const QString &action) = 0;
-    virtual QByteArray callerID() const = 0;
-    virtual bool isCallerAuthorized(const QString &action, QByteArray callerID) = 0;
-    virtual bool actionExists(const QString &action);
-
-    Capabilities capabilities() const;
-
-protected:
-    void setCapabilities(Capabilities capabilities);
+    virtual bool isCallerAuthorized(const QString &action) = 0;
 
 Q_SIGNALS:
     void actionStatusChanged(const QString &action, Action::AuthStatus status);
-
-private:
-    class Private;
-    Private * const d;
 };
 
 } // namespace Auth
 
 Q_DECLARE_INTERFACE(KAuth::AuthBackend, "org.kde.auth.AuthBackend/0.1")
-Q_DECLARE_OPERATORS_FOR_FLAGS(KAuth::AuthBackend::Capabilities)
 
 #endif
diff --git a/kdecore/auth/backends/dbus/DBusBackend.cpp b/kdecore/auth/backends/dbus/DBusBackend.cpp
index fed1bcf8..c15ed098 100644
--- a/kdecore/auth/backends/dbus/DBusBackend.cpp
+++ b/kdecore/auth/backends/dbus/DBusBackend.cpp
@@ -33,7 +33,6 @@ namespace KAuth
 DBusBackend::DBusBackend()
     : AuthBackend()
 {
-    setCapabilities(AuthorizeFromClientCapability | AuthorizeFromHelperCapability);
 }
 
 Action::AuthStatus DBusBackend::authorizeAction(const QString &action)
@@ -41,32 +40,17 @@ Action::AuthStatus DBusBackend::authorizeAction(const QString &action)
     return actionStatus(action);
 }
 
-void DBusBackend::setupAction(const QString &action)
-{
-    Q_UNUSED(action)
-}
-
 Action::AuthStatus DBusBackend::actionStatus(const QString &action)
 {
-    if (isCallerAuthorized(action, callerID())) {
+    if (isCallerAuthorized(action)) {
         return Action::Authorized;
     } else {
         return Action::Denied;
     }
 }
 
-QByteArray DBusBackend::callerID() const
+bool DBusBackend::isCallerAuthorized(const QString &action)
 {
-    QByteArray a;
-    QDataStream s(&a, QIODevice::WriteOnly);
-    s << QCoreApplication::applicationPid();
-
-    return a;
-}
-
-bool DBusBackend::isCallerAuthorized(const QString &action, QByteArray callerID)
-{
-    Q_UNUSED(callerID)
     QDBusMessage message;
 
     QRegExp rx(QLatin1String("(\\S+\\.\\S+\\.\\S+\\.\\S+)\\."));
diff --git a/kdecore/auth/backends/dbus/DBusBackend.h b/kdecore/auth/backends/dbus/DBusBackend.h
index 0ec2c6c7..5cffd6e9 100644
--- a/kdecore/auth/backends/dbus/DBusBackend.h
+++ b/kdecore/auth/backends/dbus/DBusBackend.h
@@ -34,11 +34,10 @@ class DBusBackend : public AuthBackend
 
 public:
     DBusBackend();
-    virtual void setupAction(const QString&);
-    virtual Action::AuthStatus authorizeAction(const QString&);
-    virtual Action::AuthStatus actionStatus(const QString&);
-    virtual QByteArray callerID() const;
-    virtual bool isCallerAuthorized(const QString &action, QByteArray callerID);
+
+    Action::AuthStatus authorizeAction(const QString&) final;
+    Action::AuthStatus actionStatus(const QString&) final;
+    bool isCallerAuthorized(const QString &action) final;
 };
 
 } // namespace Auth
diff --git a/kdecore/auth/backends/dbus/DBusHelperProxy.cpp b/kdecore/auth/backends/dbus/DBusHelperProxy.cpp
index 402ee436..1f8fc317 100644
--- a/kdecore/auth/backends/dbus/DBusHelperProxy.cpp
+++ b/kdecore/auth/backends/dbus/DBusHelperProxy.cpp
@@ -72,7 +72,7 @@ bool DBusHelperProxy::executeActions(const QList<QPair<QString, QVariantMap> > &
     message = QDBusMessage::createMethodCall(helperID, QLatin1String("/"), QLatin1String("org.kde.auth"), QLatin1String("performActions"));
 
     QList<QVariant> args;
-    args << blob << BackendsManager::authBackend()->callerID();
+    args << blob;
     message.setArguments(args);
 
     QDBusPendingCall reply = QDBusConnection::systemBus().asyncCall(message); // This is a NO_REPLY method
@@ -107,7 +107,7 @@ ActionReply DBusHelperProxy::executeAction(const QString &action, const QString
     message = QDBusMessage::createMethodCall(helperID, QLatin1String("/"), QLatin1String("org.kde.auth"), QLatin1String("performAction"));
 
     QList<QVariant> args;
-    args << action << BackendsManager::authBackend()->callerID() << blob;
+    args << action << blob;
     message.setArguments(args);
 
     m_actionsInProgress.push_back(action);
@@ -159,7 +159,7 @@ Action::AuthStatus DBusHelperProxy::authorizeAction(const QString& action, const
     message = QDBusMessage::createMethodCall(helperID, QLatin1String("/"), QLatin1String("org.kde.auth"), QLatin1String("authorizeAction"));
 
     QList<QVariant> args;
-    args << action << BackendsManager::authBackend()->callerID();
+    args << action;
     message.setArguments(args);
 
     m_actionsInProgress.push_back(action);
@@ -250,7 +250,7 @@ bool DBusHelperProxy::hasToStopAction()
     return m_stopRequest;
 }
 
-void DBusHelperProxy::performActions(QByteArray blob, const QByteArray &callerID)
+void DBusHelperProxy::performActions(QByteArray blob)
 {
     QDataStream stream(&blob, QIODevice::ReadOnly);
     QList< QPair< QString, QVariantMap > > actions;
@@ -264,13 +264,13 @@ void DBusHelperProxy::performActions(QByteArray blob, const QByteArray &callerID
 
         stream << i->second;
 
-        performAction(i->first, callerID, blob);
+        performAction(i->first, blob);
 
         ++i;
     }
 }
 
-QByteArray DBusHelperProxy::performAction(const QString &action, const QByteArray &callerID, QByteArray arguments)
+QByteArray DBusHelperProxy::performAction(const QString &action, QByteArray arguments)
 {
     if (!responder) {
         return ActionReply::NoResponderReply.serialized();
@@ -294,7 +294,7 @@ QByteArray DBusHelperProxy::performAction(const QString &action, const QByteArra
     QTimer *timer = responder->property("__KAuth_Helper_Shutdown_Timer").value<QTimer*>();
     timer->stop();
 
-    if (BackendsManager::authBackend()->isCallerAuthorized(action, callerID)) {
+    if (BackendsManager::authBackend()->isCallerAuthorized(action)) {
         QString slotname = action;
         if (slotname.startsWith(m_name + QLatin1Char('.'))) {
             slotname = slotname.right(slotname.length() - m_name.length() - 1);
@@ -324,7 +324,7 @@ QByteArray DBusHelperProxy::performAction(const QString &action, const QByteArra
 }
 
 
-uint DBusHelperProxy::authorizeAction(const QString& action, const QByteArray& callerID)
+uint DBusHelperProxy::authorizeAction(const QString& action)
 {
     if (!m_currentAction.isEmpty()) {
         return static_cast<uint>(Action::Error);
@@ -337,7 +337,7 @@ uint DBusHelperProxy::authorizeAction(const QString& action, const QByteArray& c
     QTimer *timer = responder->property("__KAuth_Helper_Shutdown_Timer").value<QTimer*>();
     timer->stop();
 
-    if (BackendsManager::authBackend()->isCallerAuthorized(action, callerID)) {
+    if (BackendsManager::authBackend()->isCallerAuthorized(action)) {
         retVal = static_cast<uint>(Action::Authorized);
     } else {
         retVal = static_cast<uint>(Action::Denied);
diff --git a/kdecore/auth/backends/dbus/DBusHelperProxy.h b/kdecore/auth/backends/dbus/DBusHelperProxy.h
index a416ea5d..ce3e8eeb 100644
--- a/kdecore/auth/backends/dbus/DBusHelperProxy.h
+++ b/kdecore/auth/backends/dbus/DBusHelperProxy.h
@@ -49,23 +49,23 @@ class DBusHelperProxy : public HelperProxy
 public:
     DBusHelperProxy() : responder(0), m_stopRequest(false) {}
 
-    virtual bool executeActions(const QList<QPair<QString, QVariantMap> > &list, const QString &helperID);
-    virtual ActionReply executeAction(const QString &action, const QString &helperID, const QVariantMap &arguments);
-    virtual Action::AuthStatus authorizeAction(const QString& action, const QString& helperID);
-    virtual void stopAction(const QString &action, const QString &helperID);
+    bool executeActions(const QList<QPair<QString, QVariantMap> > &list, const QString &helperID) final;
+    ActionReply executeAction(const QString &action, const QString &helperID, const QVariantMap &arguments) final;
+    Action::AuthStatus authorizeAction(const QString& action, const QString& helperID) final;
+    void stopAction(const QString &action, const QString &helperID) final;
 
-    virtual bool initHelper(const QString &name);
-    virtual void setHelperResponder(QObject *o);
-    virtual bool hasToStopAction();
-    virtual void sendDebugMessage(int level, const char *msg);
-    virtual void sendProgressStep(int step);
-    virtual void sendProgressStep(const QVariantMap &data);
+    bool initHelper(const QString &name) final;
+    void setHelperResponder(QObject *o) final;
+    bool hasToStopAction() final;
+    void sendDebugMessage(int level, const char *msg) final;
+    void sendProgressStep(int step) final;
+    void sendProgressStep(const QVariantMap &data) final;
 
 public slots:
     void stopAction(const QString &action);
-    void performActions(QByteArray blob, const QByteArray &callerID);
-    QByteArray performAction(const QString &action, const QByteArray &callerID, QByteArray arguments);
-    uint authorizeAction(const QString &action, const QByteArray &callerID);
+    void performActions(QByteArray blob);
+    QByteArray performAction(const QString &action, QByteArray arguments);
+    uint authorizeAction(const QString &action);
 
 signals:
     void remoteSignal(int type, const QString &action, const QByteArray &blob); // This signal is sent from the helper to the app
diff --git a/kdecore/auth/backends/dbus/org.kde.auth.xml b/kdecore/auth/backends/dbus/org.kde.auth.xml
index ad53386c..dca6835b 100644
--- a/kdecore/auth/backends/dbus/org.kde.auth.xml
+++ b/kdecore/auth/backends/dbus/org.kde.auth.xml
@@ -3,18 +3,15 @@
     <interface name="org.kde.auth">
         <method name="performAction" >
             <arg name="action" type="s" direction="in" />
-            <arg name="callerID" type="ay" direction="in" />
             <arg name="arguments" type="ay" direction="in" />
             <arg name="r" type="ay" direction="out" />
         </method>
         <method name="authorizeAction" >
             <arg name="action" type="s" direction="in" />
-            <arg name="callerID" type="ay" direction="in" />
             <arg name="r" type="u" direction="out" />
         </method>
         <method name="performActions" >
             <arg name="blob" type="ay" direction="in" />
-            <arg name="callerID" type="ay" direction="in" />
             <annotation name="org.freedesktop.DBus.Method.NoReply" value="true"/>
         </method>
         <method name="stopAction" >
diff --git a/kdecore/auth/kauthaction.cpp b/kdecore/auth/kauthaction.cpp
index 8fbd61c5..b2c5d20b 100644
--- a/kdecore/auth/kauthaction.cpp
+++ b/kdecore/auth/kauthaction.cpp
@@ -59,7 +59,6 @@ Action::Action(const QString &name)
         : d(new Private())
 {
     setName(name);
-    BackendsManager::authBackend()->setupAction(d->name);
 }
 
 Action::Action(const QString &name, const QString &details)
@@ -67,7 +66,6 @@ Action::Action(const QString &name, const QString &details)
 {
     setName(name);
     setDetails(details);
-    BackendsManager::authBackend()->setupAction(d->name);
 }
 
 Action::~Action()
@@ -104,15 +102,9 @@ void Action::setName(const QString &name)
 {
     d->name = name;
 
-    // Does the backend support checking for known actions?
-    if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::CheckActionExistenceCapability) {
-        // In this case, just ask the backend
-        d->valid = BackendsManager::authBackend()->actionExists(name);
-    } else {
-        // Otherwise, check through a regexp
-        QRegExp exp(QLatin1String("[0-z]+(\\.[0-z]+)*"));
-        d->valid = exp.exactMatch(name);
-    }
+    // Check through a regexp
+    QRegExp exp(QLatin1String("[0-z]+(\\.[0-z]+)*"));
+    d->valid = exp.exactMatch(name);
 }
 
 QString Action::details() const
@@ -179,32 +171,7 @@ Action::AuthStatus Action::authorize() const
         return Action::Invalid;
     }
 
-    // If there is any pre auth action, let's perform it
-    if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::PreAuthActionCapability) {
-        BackendsManager::authBackend()->preAuthAction(d->name, d->parent);
-    }
-
-    // Let's check capabilities
-    if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromClientCapability) {
-        // That's easy then
-        return BackendsManager::authBackend()->authorizeAction(d->name);
-    } else if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromHelperCapability) {
-        // We need to check if we have an helper in this case
-        if (hasHelper()) {
-            // Ok, we need to use "helper authorization".
-            return BackendsManager::helperProxy()->authorizeAction(d->name, d->helperId);
-        } else {
-            // Ok, in this case we have to fake and just pretend we are an helper
-            if (BackendsManager::authBackend()->isCallerAuthorized(d->name, BackendsManager::authBackend()->callerID())) {
-                return Authorized;
-            } else {
-                return Denied;
-            }
-        }
-    } else {
-        // This should never, never happen
-        return Invalid;
-    }
+    return BackendsManager::authBackend()->authorizeAction(d->name);
 }
 
 
@@ -213,21 +180,7 @@ Action::AuthStatus Action::earlyAuthorize() const
     // Check the status first
     AuthStatus s = status();
     if (s == AuthRequired) {
-        // Let's check what to do
-        if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromClientCapability) {
-            // In this case we can actually try an authorization
-            if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::PreAuthActionCapability) {
-                BackendsManager::authBackend()->preAuthAction(d->name, d->parent);
-            }
-
-            return BackendsManager::authBackend()->authorizeAction(d->name);
-        } else if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromHelperCapability) {
-            // In this case, just throw out Authorized, as the auth will take place later
-            return Authorized;
-        } else {
-            // This should never, never happen
-            return Invalid;
-        }
+        return BackendsManager::authBackend()->authorizeAction(d->name);
     } else {
         // It's fine, return the status
         return s;
@@ -256,23 +209,12 @@ bool Action::executeActions(const QList< Action >& actions, QList< Action >* den
 
     foreach(const Action &a, actions) {
         // Save us an additional step
-        if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromClientCapability) {
-            if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::PreAuthActionCapability) {
-                BackendsManager::authBackend()->preAuthAction(a.name(), parent);
-            }
+        AuthStatus s = BackendsManager::authBackend()->authorizeAction(a.name());
 
-            AuthStatus s = BackendsManager::authBackend()->authorizeAction(a.name());
-
-            if (s == Authorized) {
-                list.push_back(QPair<QString, QVariantMap>(a.name(), a.arguments()));
-            } else if ((s == Denied || s == Invalid) && deniedActions) {
-                *deniedActions << a;
-            }
-        } else if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromHelperCapability) {
+        if (s == Authorized) {
             list.push_back(QPair<QString, QVariantMap>(a.name(), a.arguments()));
-        } else {
-            // There's something totally wrong here
-            return false;
+        } else if ((s == Denied || s == Invalid) && deniedActions) {
+            *deniedActions << a;
         }
     }
 
@@ -308,16 +250,11 @@ ActionReply Action::execute(const QString &helperID) const
         return ActionReply::InvalidActionReply;
     }
 
-    // What to do?
-    if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromClientCapability) {
-        if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::PreAuthActionCapability) {
-            BackendsManager::authBackend()->preAuthAction(d->name, d->parent);
-        }
-        // Authorize from here
-        AuthStatus s = BackendsManager::authBackend()->authorizeAction(d->name);
+    // Authorize from here
+    AuthStatus s = BackendsManager::authBackend()->authorizeAction(d->name);
 
-        // Abort if authorization fails
-        switch (s) {
+    // Abort if authorization fails
+    switch (s) {
         case Denied:
             return ActionReply::AuthorizationDeniedReply;
         case Invalid:
@@ -326,25 +263,6 @@ ActionReply Action::execute(const QString &helperID) const
             return ActionReply::UserCancelledReply;
         default:
             break;
-        }
-    } else if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::AuthorizeFromHelperCapability) {
-        // In this case we care only if the action is not async and does not have an helper
-        if (!d->async && !hasHelper()) {
-            // Authorize!
-            switch (authorize()) {
-            case Denied:
-                return ActionReply::AuthorizationDeniedReply;
-            case Invalid:
-                return ActionReply::InvalidActionReply;
-            case UserCancelled:
-                return ActionReply::UserCancelledReply;
-            default:
-                break;
-            }
-        }
-    } else {
-        // What?
-        return ActionReply::InvalidActionReply;
     }
 
     if (d->async) {
@@ -357,11 +275,6 @@ ActionReply Action::execute(const QString &helperID) const
             ActionReply::SuccessReply : ActionReply::AuthorizationDeniedReply;
     } else {
         if (hasHelper()) {
-            // Perform the pre auth here
-            if (BackendsManager::authBackend()->capabilities() & KAuth::AuthBackend::PreAuthActionCapability) {
-                BackendsManager::authBackend()->preAuthAction(d->name, d->parent);
-            }
-
             return BackendsManager::helperProxy()->executeAction(d->name, helperID, d->args);
         } else {
             return ActionReply::SuccessReply;