Index: sources/main.h
===================================================================
diff -u -r2bc6542cebc264eb343f791f75223a1ca151465e -r028cb1403e8fcb2d2e9ab2aa1562f660124015b1
--- sources/main.h	(.../main.h)	(revision 2bc6542cebc264eb343f791f75223a1ca151465e)
+++ sources/main.h	(.../main.h)	(revision 028cb1403e8fcb2d2e9ab2aa1562f660124015b1)
@@ -316,8 +316,12 @@
 //--------------------------------------------------------------------------------//
 #define SAFE_CALL(                vMETHOD)                              \
 public          : void            vMETHOD() {                           \
+    static bool init = false;                                           \
+    if ( ! init ) {                                                     \
         connect(this, SIGNAL(did##vMETHOD()),                           \
                 this,   SLOT( on##vMETHOD()));                          \
+        init = true;                                                    \
+    }                                                                   \
                 emit         did##vMETHOD();}                           \
 Q_SIGNALS       : void       did##vMETHOD();                            \
 private Q_SLOTS : void        on##vMETHOD();