diff -urN kde-workspace-4.11.4/ksmserver/screenlocker/lockwindow.cpp kde-workspace-4.11.4-patched/ksmserver/screenlocker/lockwindow.cpp
--- kde-workspace-4.11.4/ksmserver/screenlocker/lockwindow.cpp	2013-06-29 04:10:44.307419346 +1100
+++ kde-workspace-4.11.4-patched/ksmserver/screenlocker/lockwindow.cpp	2013-12-18 15:52:40.471486471 +1100
@@ -77,6 +77,7 @@
 void LockWindow::initialize()
 {
     kapp->installX11EventFilter(this);
+    m_focused = false;
 
     XWindowAttributes rootAttr;
     QX11Info info;
@@ -379,7 +380,10 @@
                             setCursor(Qt::ArrowCursor);
                         }
                         m_lockWindows.prepend(event->xmap.window);
-                        fakeFocusIn(event->xmap.window);
+                        if (!m_focused) {
+                            m_focused = true;
+                            fakeFocusIn(event->xmap.window);
+                        }
                     }
                 }
                 stayOnTop();
diff -urN kde-workspace-4.11.4/ksmserver/screenlocker/lockwindow.h kde-workspace-4.11.4-patched/ksmserver/screenlocker/lockwindow.h
--- kde-workspace-4.11.4/ksmserver/screenlocker/lockwindow.h	2013-06-29 04:10:44.307419346 +1100
+++ kde-workspace-4.11.4-patched/ksmserver/screenlocker/lockwindow.h	2013-12-18 15:50:13.111776760 +1100
@@ -67,6 +67,7 @@
     QList<WindowInfo> m_windowInfo;
     QList<WId> m_lockWindows;
     QTimer *m_autoLogoutTimer;
+    bool m_focused;
 };
 }