diff -Nur kdebase-4.2.2/apps/konqueror/src/konqmain.cpp kdebase-4.2.2.new/apps/konqueror/src/konqmain.cpp
--- kdebase-4.2.2/apps/konqueror/src/konqmain.cpp	2008-11-12 17:37:08.000000000 +0100
+++ kdebase-4.2.2.new/apps/konqueror/src/konqmain.cpp	2009-04-16 14:05:37.000000000 +0200
@@ -24,6 +24,7 @@
 #include "konqsessionmanager.h"
 #include "konqview.h"
 #include "konqsettingsxt.h"
+#include "kprocess.h"
 
 #include <ktemporaryfile.h>
 #include <klocale.h>
@@ -254,6 +255,19 @@
   }
   args->clear();
 
+  // FIX: Execute nspluginscan if available, so that users won't have
+  // to run it manually (see LP: #349728
+  KProcess nspluginscan;
+  nspluginscan.setOutputChannelMode(KProcess::SeparateChannels);
+  QString scanExe = KGlobal::dirs()->findExe("nspluginscan");
+  if (scanExe.isEmpty()) {
+      kDebug() << "can't find nspluginviewer";
+  }
+  // start nspluginscan
+  nspluginscan << scanExe;
+  kDebug() << "Running nspluginscan";
+  nspluginscan.start();
+
   app.exec();
 
   // Delete all KonqMainWindows, so that we don't have