diff -up tigervnc-1.3.0/unix/xserver/hw/vnc/xf86vncModule.cc~ tigervnc-1.3.0/unix/xserver/hw/vnc/xf86vncModule.cc
--- tigervnc-1.3.0/unix/xserver/hw/vnc/xf86vncModule.cc~	2014-07-09 12:27:54.624441987 +0100
+++ tigervnc-1.3.0/unix/xserver/hw/vnc/xf86vncModule.cc	2014-07-09 16:17:04.391345366 +0100
@@ -90,9 +90,15 @@ vncSetup(pointer module, pointer opts, i
 
 static void vncExtensionInitWithParams(INITARGS)
 {
+  static bool once = false;
+
   rfb::initStdIOLoggers();
   rfb::LogWriter::setLogParams("*:stderr:30");
-  rfb::Configuration::enableServerParams();
+
+  if (!once) {
+    rfb::Configuration::enableServerParams();
+    once = true;
+  }
 
   for (int scr = 0; scr < screenInfo.numScreens; scr++) {
     ScrnInfoPtr pScrn = xf86Screens[scr];