diff -ru -I qucs-0.0.11 qucs-0.0.11/qucs/diagrams/diagram.cpp qucs-0.0.11_d/qucs/diagrams/diagram.cpp
--- qucs-0.0.11/qucs/diagrams/diagram.cpp	2007-03-05 17:35:09.000000000 +0100
+++ qucs-0.0.11_d/qucs/diagrams/diagram.cpp	2007-04-13 14:23:15.000000000 +0200
@@ -31,6 +31,7 @@
 #include <qmessagebox.h>
 #include <qregexp.h>
 #include <qdatetime.h>
+#include <locale.h>
 
 #include "diagram.h"
 #include "qucs.h"
@@ -828,6 +829,8 @@
 //  if(g->Var.right(3) == "].X")  // e.g. stdl[8:0].X
 //    if(pos > g->Var.find('['))
 //      pos = -1;
+  
+  setlocale(LC_NUMERIC,"C");
 
   if(pos <= 0) {
     file.setName(fileName);
@@ -1044,6 +1047,9 @@
   // "pFile" is used through-out the whole function and must NOT used
   // for other purposes!
   char *pFile = strstr(FileString, Line.latin1());
+  
+  setlocale(LC_NUMERIC,"C");
+  
   while(pFile) {
     if(*(pFile-1) == '<')     // is dependent variable ?
       break;