Index: library/mongodb/nsfmongo.c
===================================================================
diff -u -r42ba8471f7620b850b6296f753cbc3079fe5c6cd -rbfc9f64e6e94f265a27a32d5f7faf0763ae1c9e3
--- library/mongodb/nsfmongo.c	(.../nsfmongo.c)	(revision 42ba8471f7620b850b6296f753cbc3079fe5c6cd)
+++ library/mongodb/nsfmongo.c	(.../nsfmongo.c)	(revision bfc9f64e6e94f265a27a32d5f7faf0763ae1c9e3)
@@ -1169,8 +1169,13 @@
 
 void 
 Nsfmongo_Exit(ClientData clientData) {
-  Tcl_Interp *interp = (Tcl_Interp *)clientData;
-  NsfLog(interp,NSF_LOG_NOTICE, "Nsfmongo Exit");
+  /*
+   * The exit might happen at a time, when tcl is already shut down.
+   * We can't reliably call NsfLog.
+   *
+   *   Tcl_Interp *interp = (Tcl_Interp *)clientData;
+   *   NsfLog(interp,NSF_LOG_NOTICE, "Nsfmongo Exit");
+   */
 }
 
 extern int