--- Lib/urllib.py	2010-02-20 17:13:01.000000000 -0500
+++ Lib/urllib.py	2013-03-14 01:11:49.000000000 -0400
@@ -1401,10 +1401,10 @@
         if getproxies_environment():
             return proxy_bypass_environment(host)
         else:
-            return proxy_bypass_macosx_sysconf(host)
+            return false
 
     def getproxies():
-        return getproxies_environment() or getproxies_macosx_sysconf()
+        return getproxies_environment()
 
 elif os.name == 'nt':
     def getproxies_registry():