diff --git a/pkgs/desktops/kde-4.5/base-runtime/default.nix b/pkgs/desktops/kde-4.5/base-runtime/default.nix
new file mode 100644
index 00000000000..35466b4b624
--- /dev/null
+++ b/pkgs/desktops/kde-4.5/base-runtime/default.nix
@@ -0,0 +1,25 @@
+{ kdePackage, cmake, perl, bzip2, xz, qt4, alsaLib, xineLib, samba,
+  shared_mime_info, exiv2, libssh , kdelibs, automoc4, strigi, soprano,
+  cluceneCore, attica, virtuoso, makeWrapper }:
+
+kdePackage {
+  pn = "kdebase-runtime";
+  v = "4.5.0";
+
+  buildInputs = [ cmake perl bzip2 xz qt4 alsaLib xineLib samba shared_mime_info
+    exiv2 libssh kdelibs automoc4 strigi soprano cluceneCore attica
+    makeWrapper];
+
+  patches = [ ./freeze.diff ];
+
+  postInstall = ''
+    wrapProgram "$out/bin/nepomukservicestub" --prefix LD_LIBRARY_PATH : "${virtuoso}/lib" \
+        --prefix PATH : "${virtuoso}/bin"
+  '';
+
+  meta = {
+    description = "KDE runtime";
+    longDescription = "Libraries and tools which supports running KDE desktop applications";
+    license = "LGPL";
+  };
+}
diff --git a/pkgs/desktops/kde-4.5/base-runtime/freeze.diff b/pkgs/desktops/kde-4.5/base-runtime/freeze.diff
new file mode 100644
index 00000000000..62079f6e8ce
--- /dev/null
+++ b/pkgs/desktops/kde-4.5/base-runtime/freeze.diff
@@ -0,0 +1,37 @@
+Index: kioslave/network/network/builder/upnp/upnpnetworkbuilder.cpp
+===================================================================
+--- a/kioslave/network/network/builder/upnp/upnpnetworkbuilder.cpp	(revision 1160390)
++++ b/kioslave/network/network/builder/upnp/upnpnetworkbuilder.cpp	(revision 1160391)
+@@ -36,6 +36,7 @@
+ #include <QtDBus/QDBusConnection>
+ #include <QtDBus/QDBusInterface>
+ #include <QtDBus/QDBusPendingCallWatcher>
++#include <QtCore/QTimer>
+ #include <QtCore/QStringList>
+ 
+ #include <KDebug>
+@@ -60,6 +61,11 @@
+ 
+ void UpnpNetworkBuilder::start()
+ {
++    QTimer::singleShot(0, this, SLOT(startBrowse()));
++}
++
++void UpnpNetworkBuilder::startBrowse()
++{
+     qDBusRegisterMetaType<DeviceTypeMap>();
+     qDBusRegisterMetaType<Cagibi::Device>();
+ 
+Index: kioslave/network/network/builder/upnp/upnpnetworkbuilder.h
+===================================================================
+--- a/kioslave/network/network/builder/upnp/upnpnetworkbuilder.h	(revision 1160390)
++++ b/kioslave/network/network/builder/upnp/upnpnetworkbuilder.h	(revision 1160391)
+@@ -63,6 +63,8 @@
+     void removeUPnPDevices( const QList<Cagibi::Device>& devices );
+ 
+   private Q_SLOTS:
++    void startBrowse();
++
+     void onDevicesAdded( const DeviceTypeMap& deviceTypeMap );
+     void onDevicesRemoved( const DeviceTypeMap& deviceTypeMap );
+     void onAddedDeviceDetails( const Cagibi::Device& device );
diff --git a/pkgs/desktops/kde-4.5/default.nix b/pkgs/desktops/kde-4.5/default.nix
index e3a52ab861a..ad2b2684c6d 100644
--- a/pkgs/desktops/kde-4.5/default.nix
+++ b/pkgs/desktops/kde-4.5/default.nix
@@ -40,6 +40,8 @@
 
   kdebase_workspace = callPackage ./base-workspace { };
 
+  kdebase_runtime = callPackage ./base-runtime { };
+
   kdeartwork = callPackage ./artwork { };
 
 ### DEVELOPMENT