--- msvccompiler.py.orig	2006-07-29 14:14:58.987787800 -0400
+++ msvccompiler.py	2006-07-29 14:14:42.745698200 -0400
@@ -241,8 +241,13 @@
             for p in string.split(os.environ['path'], ';'):
                 self.__paths.append(p)
         except KeyError:
             pass
+        reduced_paths = []
+        for p in self.__paths:
+            if p not in reduced_paths:
+                reduced_paths.append(p)
+        self.__paths = reduced_paths
         os.environ['path'] = string.join(self.__paths, ';')
 
         self.preprocess_options = None
         self.compile_options = [ '/nologo', '/Ox', '/MD', '/W3', '/GX' ,