diff -r 4a318a45c4c3 Lib/uuid.py
--- a/Lib/uuid.py   Mon Aug 19 13:07:18 2013 -0400
+++ b/Lib/uuid.py   Mon Aug 19 21:41:08 2013 +0400
@@ -429,6 +429,8 @@
             _uuid_generate_random = lib.uuid_generate_random
         if hasattr(lib, 'uuid_generate_time'):
             _uuid_generate_time = lib.uuid_generate_time
+            if _uuid_generate_random is not None:
+                break  # found everything we were looking for
 
     # The uuid_generate_* functions are broken on MacOS X 10.5, as noted
     # in issue #8621 the function generates the same sequence of values