diff --git a/src/llconclientdlg.cpp b/src/llconclientdlg.cpp
index 8bf9db24..8f5950f9 100755
--- a/src/llconclientdlg.cpp
+++ b/src/llconclientdlg.cpp
@@ -28,6 +28,7 @@
 /* Implementation *************************************************************/
 CLlconClientDlg::CLlconClientDlg ( CClient* pNCliP,
                                   const bool bNewConnectOnStartup,
+                                  const bool bNewDisalbeLEDs,
                                   QWidget* parent, Qt::WindowFlags f ) :
     pClient ( pNCliP ), QDialog ( parent, f ),
     ClientSettingsDlg ( pNCliP, parent
@@ -129,11 +130,6 @@ CLlconClientDlg::CLlconClientDlg ( CClient* pNCliP,
     MultiColorLEDBarInputLevelR->setValue ( 0 );
 
 
-// TEST
-MultiColorLEDBarInputLevelL->setEnabled ( false );
-
-
-
     // init slider controls ---
     // audio in fader
     SliderAudInFader->setRange ( AUD_FADER_IN_MIN, AUD_FADER_IN_MAX );
@@ -169,6 +165,15 @@ MultiColorLEDBarInputLevelL->setEnabled ( false );
     }
 
 
+    // disable controls on request ---
+    // disable LEDs in main window if requested
+    if ( bNewDisalbeLEDs )
+    {
+        MultiColorLEDBarInputLevelL->setEnabled ( false );
+        LEDOverallStatus->setEnabled ( false );
+    }
+
+
     // Settings menu  ----------------------------------------------------------
     pSettingsMenu = new QMenu ( "&View", this );
     pSettingsMenu->addAction ( tr ( "&Chat..." ), this,
diff --git a/src/llconclientdlg.h b/src/llconclientdlg.h
index faf2ee76..62e04ecb 100755
--- a/src/llconclientdlg.h
+++ b/src/llconclientdlg.h
@@ -67,6 +67,7 @@ class CLlconClientDlg : public QDialog, private Ui_CLlconClientDlgBase
 
 public:
     CLlconClientDlg ( CClient* pNCliP, const bool bNewConnectOnStartup,
+                      const bool bNewDisalbeLEDs,
                       QWidget* parent = 0, Qt::WindowFlags f = 0 );
     virtual ~CLlconClientDlg();
 
diff --git a/src/main.cpp b/src/main.cpp
index 90e63632..357d0e64 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -47,6 +47,7 @@ int main ( int argc, char** argv )
     bool        bIsClient             = true;
     bool        bUseGUI               = true;
     bool        bConnectOnStartup     = false;
+    bool        bDisalbeLEDs          = false;
     int         iUploadRateLimitKbps  = DEF_MAX_UPLOAD_RATE_KBPS;
     quint16     iPortNumber           = LLCON_DEFAULT_PORT_NUMBER;
     std::string strIniFileName        = "";
@@ -78,6 +79,15 @@ int main ( int argc, char** argv )
         }
 
 
+        // disable LEDs flag ---------------------------------------------------
+        if ( GetFlagArgument ( argc, argv, i, "-d", "--disableleds" ) )
+        {
+            bDisalbeLEDs = true;
+            cout << "disable LEDs in main window" << std::endl;
+            continue;
+        }
+
+
         // use logging ---------------------------------------------------------
         if ( GetStringArgument ( argc, argv, i, "-l", "--log", strArgument ) )
         {
@@ -203,7 +213,7 @@ int main ( int argc, char** argv )
 
             // GUI object
             CLlconClientDlg ClientDlg (
-                &Client, bConnectOnStartup,
+                &Client, bConnectOnStartup, bDisalbeLEDs,
                 0
 #ifdef _WIN32
                 // this somehow only works reliable on Windows
@@ -303,6 +313,8 @@ std::string UsageArguments ( char **argv )
         "  -u, --maxuploadrate        maximum upload rate (only avaiable for server)\n"
         "  -c, --connect              connect to last server on startup (only\n"
         "                             available for client)\n"
+        "  -d, --disableleds          disable LEDs in main window (only available\n"
+        "                             for client)\n"
         "  -h, -?, --help             this help text\n"
         "Example: " + std::string ( argv[0] ) + " -l -inifile myinifile.ini\n";
 }
diff --git a/src/multicolorled.cpp b/src/multicolorled.cpp
index 056c6ae7..a7e0aec6 100755
--- a/src/multicolorled.cpp
+++ b/src/multicolorled.cpp
@@ -31,10 +31,11 @@
 /* Implementation *************************************************************/
 CMultiColorLED::CMultiColorLED ( QWidget* parent, Qt::WindowFlags f )
     : QLabel ( parent, f ),
-    BitmCubeGrey   ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDGreySmall.png" ) ),
-    BitmCubeGreen  ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDGreenSmall.png" ) ),
-    BitmCubeYellow ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDYellowSmall.png" ) ),
-    BitmCubeRed    ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDRedSmall.png" ) )
+    BitmCubeDisabled ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDDisabledSmall.png" ) ),
+    BitmCubeGrey     ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDGreySmall.png" ) ),
+    BitmCubeGreen    ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDGreenSmall.png" ) ),
+    BitmCubeYellow   ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDYellowSmall.png" ) ),
+    BitmCubeRed      ( QString::fromUtf8 ( ":/png/LEDs/res/CLEDRedSmall.png" ) )
 {
     // init color flags
     Reset();
@@ -63,14 +64,22 @@ CMultiColorLED::CMultiColorLED ( QWidget* parent, Qt::WindowFlags f )
         this, SLOT ( OnNewPixmap ( const QPixmap& ) ) );
 }
 
-void CMultiColorLED::Reset()
+void CMultiColorLED::changeEvent ( QEvent* curEvent )
 {
-    // reset color flags
-    bFlagRedLi    = false;
-    bFlagGreenLi  = false;
-    bFlagYellowLi = false;
-
-    UpdateColor();
+    // act on enabled changed state
+    if ( curEvent->type() == QEvent::EnabledChange )
+    {
+        if ( this->isEnabled() )
+        {
+            emit newPixmap ( BitmCubeGrey );
+            eColorFlag = RL_GREY;
+        }
+        else
+        {
+            emit newPixmap ( BitmCubeDisabled );
+            eColorFlag = RL_DISABLED;
+        }
+    }
 }
 
 void CMultiColorLED::OnTimerRedLight() 
@@ -134,30 +143,46 @@ void CMultiColorLED::UpdateColor()
     }
 }
 
+void CMultiColorLED::Reset()
+{
+    if ( this->isEnabled() )
+    {
+        // reset color flags
+        bFlagRedLi    = false;
+        bFlagGreenLi  = false;
+        bFlagYellowLi = false;
+
+        UpdateColor();
+    }
+}
+
 void CMultiColorLED::SetLight ( const int iNewStatus )
 {
-    switch ( iNewStatus )
+    if ( this->isEnabled() )
     {
-    case MUL_COL_LED_GREEN:
-        // green light
-        bFlagGreenLi = true;
-        TimerGreenLight.start();
-        break;
+        switch ( iNewStatus )
+        {
+        case MUL_COL_LED_GREEN:
+            // green light
+            bFlagGreenLi = true;
+            TimerGreenLight.start();
+            break;
 
-    case MUL_COL_LED_YELLOW:
-        // yellow light
-        bFlagYellowLi = true;
-        TimerYellowLight.start();
-        break;
+        case MUL_COL_LED_YELLOW:
+            // yellow light
+            bFlagYellowLi = true;
+            TimerYellowLight.start();
+            break;
 
-    case MUL_COL_LED_RED:
-        // red light
-        bFlagRedLi = true;
-        TimerRedLight.start();
-        break;
+        case MUL_COL_LED_RED:
+            // red light
+            bFlagRedLi = true;
+            TimerRedLight.start();
+            break;
+        }
+
+        UpdateColor();
     }
-
-    UpdateColor();
 }
 
 void CMultiColorLED::SetUpdateTime ( const int iNUTi )
diff --git a/src/multicolorled.h b/src/multicolorled.h
index c5596475..abd6661e 100755
--- a/src/multicolorled.h
+++ b/src/multicolorled.h
@@ -60,11 +60,20 @@ public:
     void SetLight ( const int iNewStatus );
 
 protected:
-    enum ELightColor { RL_GREY, RL_GREEN, RL_YELLOW, RL_RED };
+    enum ELightColor
+    {
+        RL_DISABLED,
+        RL_GREY,
+        RL_GREEN,
+        RL_YELLOW,
+        RL_RED
+    };
     ELightColor eColorFlag;
 
+    virtual void changeEvent ( QEvent* curEvent );
     void UpdateColor();
 
+    QPixmap BitmCubeDisabled;
     QPixmap BitmCubeGrey;
     QPixmap BitmCubeGreen;
     QPixmap BitmCubeYellow;
@@ -142,5 +151,4 @@ protected:
     CMultColLEDListViewItem LED0, LED1;
 };
 
-
 #endif // _MULTCOLORLED_H__FD6B49B5_87DF_48DD_A873_804E1606C2AC__INCLUDED_