===================================================================
--- kncomposer.cpp      (Revision 812317)
+++ kncomposer.cpp      (Arbeitskopie)
@@ -1539,6 +1539,7 @@

 void KNComposer::slotCancelEditor()
 {
+  disconnect(e_xternalEditor, 0, 0, 0); // disconnect all signals before deleting
   delete e_xternalEditor;  // this also kills the editor process if it's still running
   e_xternalEditor=0;
   delete e_ditorTempfile;