diff --git a/common/rfb/ScaledPixelBuffer.cxx b/common/rfb/ScaledPixelBuffer.cxx
index bf4612d..5892a97 100644
--- a/common/rfb/ScaledPixelBuffer.cxx
+++ b/common/rfb/ScaledPixelBuffer.cxx
@@ -18,6 +18,7 @@
 
 // -=- ScaledPixelBuffer.cxx
 
+#include <rfb/Exception.h>
 #include <rfb/ScaledPixelBuffer.h>
 
 #include <math.h>
@@ -27,15 +28,16 @@
 using namespace rfb;
 
 ScaledPixelBuffer::ScaledPixelBuffer(U8 **src_data_, int src_width_,
-                                     int src_height_, int scale)
-  : bpp(32), scaled_data(0), scale_ratio(1), scale(100) {
+                                     int src_height_, int scale, PixelFormat pf_)
+  : scaled_data(0), scale_ratio(1), scale(100) {
 
   setSourceBuffer(src_data_, src_width_, src_height_);
+  setPF(pf_);
 }
 
 ScaledPixelBuffer::ScaledPixelBuffer() 
   : src_data(0), src_width(0), src_height(0), scale_ratio(1), scale(100),
-    bpp(32), scaled_data(0) {
+    pf(PixelFormat(32,24,0,1,255,255,255,0,8,16)), scaled_data(0) {
 }
 
 ScaledPixelBuffer::~ScaledPixelBuffer() {
@@ -46,7 +48,13 @@
   src_width  = w;
   src_height = h;
   calculateScaledBufferSize();
-  recreateScaledBuffer();
+}
+
+void ScaledPixelBuffer::setPF(const PixelFormat &pf_) {
+  if (pf_.depth != 24) {
+    throw rfb::Exception("rfb::ScaledPixelBuffer support only the true colour pixel format.");
+  }
+  pf = pf_;
 }
 
 void ScaledPixelBuffer::setScale(int scale_) {
@@ -54,7 +62,6 @@
     scale = scale_;
     scale_ratio = double(scale) / 100;
     calculateScaledBufferSize();
-    recreateScaledBuffer();
   }
 }
 
@@ -127,6 +134,3 @@
   scaled_width  = (int)ceil(src_width  * scale_ratio);
   scaled_height = (int)ceil(src_height * scale_ratio);
 }
-
-void ScaledPixelBuffer::recreateScaledBuffer() {
-}
diff --git a/common/rfb/ScaledPixelBuffer.h b/common/rfb/ScaledPixelBuffer.h
index 3b6aa7e..d69f0ac 100644
--- a/common/rfb/ScaledPixelBuffer.h
+++ b/common/rfb/ScaledPixelBuffer.h
@@ -24,6 +24,7 @@
 
 #include <rdr/types.h>
 #include <rfb/Rect.h>
+#include <rfb/PixelFormat.h>
 
 using namespace rdr;
 
@@ -31,7 +32,7 @@
 
   class ScaledPixelBuffer {
   public:
-    ScaledPixelBuffer(U8 **data, int width, int height, int scale);
+    ScaledPixelBuffer(U8 **data, int width, int height, int scale, PixelFormat pf);
     ScaledPixelBuffer();
     virtual ~ScaledPixelBuffer();
 
@@ -51,6 +52,9 @@
     // Set the new source buffer and its parameters
     void setSourceBuffer(U8 **src_data, int w, int h);
 
+    // Set the new pixel format
+    void setPF(const PixelFormat &pf);
+
     // Set the new scale, in percent
     virtual void setScale(int scale);
 
@@ -68,14 +72,12 @@
     // parameters (width, height, pixel format)
     void calculateScaledBufferSize();
 
-    // Recreate the scaled pixel buffer
-    virtual void recreateScaledBuffer();
 
     int src_width;
     int src_height;
     int scaled_width;
     int scaled_height;
-    int bpp;
+    PixelFormat pf;
     int scale;
     double scale_ratio;
     U8 **src_data;
diff --git a/unix/xc/programs/Xserver/vnc/Xvnc/Imakefile b/unix/xc/programs/Xserver/vnc/Xvnc/Imakefile
index 93885ae..1223c57 100644
--- a/unix/xc/programs/Xserver/vnc/Xvnc/Imakefile
+++ b/unix/xc/programs/Xserver/vnc/Xvnc/Imakefile
@@ -60,12 +60,12 @@
           $(VENDOR_STRING) $(VENDOR_RELEASE) $(STD_DEFINES) ServerOSDefines \
           $(VNCDEFINES) -UXFree86LOADER
 
-#ifdef XFree86Version
+#if defined(XFree86Version) || defined(XorgVersion)
 /* 
  * Make sure XINPUT, XF86VidTune, etc arent defined for the miinitext.o 
  * used by Xvnc 
  */
-EXT_DEFINES = ExtensionDefines -UXF86VIDMODE -UXFreeXDGA -UXF86MISC
+EXT_DEFINES = ExtensionDefines -UXF86VIDMODE -UXFreeXDGA -UXF86MISC -UXF86DRI
 #endif
 
 
diff --git a/unix/xc/programs/Xserver/vnc/Xvnc/xvnc.cc b/unix/xc/programs/Xserver/vnc/Xvnc/xvnc.cc
index fcb73e6..5daf663 100644
--- a/unix/xc/programs/Xserver/vnc/Xvnc/xvnc.cc
+++ b/unix/xc/programs/Xserver/vnc/Xvnc/xvnc.cc
@@ -87,9 +87,11 @@
 #undef and
 }
 
-#define XVNCVERSION "Free Edition 4.1.1"
+#define XVNCVERSION "TightVNC 1.5 series"
 #define XVNCCOPYRIGHT ("Copyright (C) 2002-2005 RealVNC Ltd.\n" \
-                       "See http://www.realvnc.com for information on VNC.\n")
+		       "Copyright (C) 2000-2006 Constantin Kaplinsky\n" \
+		       "Copyright (C) 2004-2006 Peter Astrand, Cendio AB\n" \
+                       "See http://www.tightvnc.com for information on TightVNC.\n")
 
 
 extern char *display;
@@ -203,11 +205,6 @@
 
 extern "C" {
 
-  /* ddxInitGlobals - called by |InitGlobals| from os/util.c in XOrg */
-  void ddxInitGlobals(void)
-  {
-  }
-
   void ddxGiveUp()
   {
     int i;
diff --git a/win/rfb_win32/ScaledDIBSectionBuffer.cxx b/win/rfb_win32/ScaledDIBSectionBuffer.cxx
index e6c15b8..bd6b4d3 100644
--- a/win/rfb_win32/ScaledDIBSectionBuffer.cxx
+++ b/win/rfb_win32/ScaledDIBSectionBuffer.cxx
@@ -40,23 +40,28 @@
 void ScaledDIBSectionBuffer::setScale(int scale_) {
   if (scale_ == getScale()) return;
 
-  if (src_buffer) {
-    delete src_buffer;
-    src_buffer = 0;
-  }
   if (scale_ != 100) {
     scaling = true;
-    src_buffer = new ManagedPixelBuffer(format, src_width, src_height);
-    src_data = &(src_buffer->data);
+    if (!src_buffer) {
+      src_buffer = new ManagedPixelBuffer(format, src_width, src_height);
+      src_data = &(src_buffer->data);
+    }
   } else {
     scaling = false;
+    if (src_buffer) delete src_buffer;
+    src_buffer = 0;
+    src_data = 0;
   }
   ScaledPixelBuffer::setScale(scale_);
+  recreateScaledBuffer();
 }
 
-void ScaledDIBSectionBuffer::setPF(const PixelFormat &pf) {
-  if (scaling) src_buffer->setPF(pf);
-  DIBSectionBuffer::setPF(pf);
+void ScaledDIBSectionBuffer::setPF(const PixelFormat &pf_) {
+  if (scaling) {
+    ScaledPixelBuffer::setPF(pf_);
+    src_buffer->setPF(pf_);
+  }
+  DIBSectionBuffer::setPF(pf_);
   scaled_data = data;
 }
 
diff --git a/win/vncviewer/OptionsDialog.cxx b/win/vncviewer/OptionsDialog.cxx
index 2e43b38..5bb21fd 100644
--- a/win/vncviewer/OptionsDialog.cxx
+++ b/win/vncviewer/OptionsDialog.cxx
@@ -163,6 +163,15 @@
     setItemChecked(IDC_ACCEPT_BELL, dlg->options.acceptBell);
     setItemChecked(IDC_AUTO_RECONNECT, dlg->options.autoReconnect);
     setItemChecked(IDC_SHOW_TOOLBAR, dlg->options.showToolbar);
+    char scale_values[8][20] = {
+      "25","50","75","90","100","125","150","Auto"
+    };
+    HWND hScaleCombo = GetDlgItem(handle, IDC_COMBO_SCALE);
+    for (int i = 0; i <= 7; i++) {
+      SendMessage(hScaleCombo, CB_INSERTSTRING, 
+        (WPARAM)i, (LPARAM)(int FAR*)scale_values[i]);
+    }
+    SetDlgItemText(handle, IDC_COMBO_SCALE, "100");
   }
   virtual bool onOk() {
     dlg->options.shared = isItemChecked(IDC_CONN_SHARED);
diff --git a/win/vncviewer/resource.h b/win/vncviewer/resource.h
index 5493fd0..7fb32fe 100644
--- a/win/vncviewer/resource.h
+++ b/win/vncviewer/resource.h
@@ -120,6 +120,9 @@
 #define IDC_FTREMOTELIST                1094
 #define IDC_ALLOW_JPEG                  1095
 #define IDC_FTLOCALRELOAD               1096
+#define IDC_STATIC_SCALE                1097
+#define IDC_COMBO_SCALE                 1098
+#define IDC_STATIC_PERCENT              1099
 #define ID_TOOLBAR                      40002
 #define ID_CLOSE                        40003
 #define ID_OPTIONS                      40004
@@ -148,7 +151,7 @@
 #ifndef APSTUDIO_READONLY_SYMBOLS
 #define _APS_NEXT_RESOURCE_VALUE        134
 #define _APS_NEXT_COMMAND_VALUE         40028
-#define _APS_NEXT_CONTROL_VALUE         1097
+#define _APS_NEXT_CONTROL_VALUE         1100
 #define _APS_NEXT_SYMED_VALUE           101
 #endif
 #endif
diff --git a/win/vncviewer/vncviewer.rc b/win/vncviewer/vncviewer.rc
index ea5dd65..b71f180 100644
--- a/win/vncviewer/vncviewer.rc
+++ b/win/vncviewer/vncviewer.rc
@@ -223,7 +223,7 @@
     CONTROL         "Show toolbar",IDC_SHOW_TOOLBAR,"Button",BS_AUTOCHECKBOX | 
                     WS_TABSTOP,106,25,100,15
     CONTROL         "Render cursor locally",IDC_LOCAL_CURSOR,"Button",
-                    BS_AUTOCHECKBOX | WS_TABSTOP,7,40,199,15
+                    BS_AUTOCHECKBOX | WS_TABSTOP,7,40,99,15
     CONTROL         "Allow dynamic desktop resizing",IDC_DESKTOP_RESIZE,
                     "Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,55,199,15
     CONTROL         "Only use protocol version 3.3",IDC_PROTOCOL_3_3,"Button",
@@ -232,6 +232,10 @@
                     "Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,85,199,15
     CONTROL         "Offer to automatically reconnect",IDC_AUTO_RECONNECT,
                     "Button",BS_AUTOCHECKBOX | WS_TABSTOP,7,100,199,15
+    LTEXT           "Scale by:",IDC_STATIC_SCALE,106,40,34,15,SS_CENTERIMAGE
+    COMBOBOX        IDC_COMBO_SCALE,140,40,40,30,CBS_DROPDOWN | CBS_SORT | 
+                    WS_VSCROLL | WS_TABSTOP
+    LTEXT           "%",IDC_STATIC_PERCENT,185,40,21,15,SS_CENTERIMAGE
 END
 
 IDD_INPUTS DIALOG DISCARDABLE  0, 0, 186, 162