diff -r 1696e2789d91 Lib/test/test_socket.py
--- a/Lib/test/test_socket.py	Wed Aug 24 02:15:25 2011 +0200
+++ b/Lib/test/test_socket.py	Wed Aug 24 18:36:22 2011 +0200
@@ -2090,7 +2090,9 @@
     def _testFDPassCMSG_LEN(self):
         self.createAndSendFDs(1)
 
+    # Passing multiple FDs at once isn't reliable on OS X < 10.5.
     @requireAttrs(socket, "CMSG_SPACE")
+    @support.requires_mac_ver(10, 5)
     def testFDPassSeparate(self):
         # Pass two FDs in two separate arrays.  Arrays may be combined
         # into a single control message by the OS.
@@ -2111,6 +2113,7 @@
             len(MSG))
 
     @requireAttrs(socket, "CMSG_SPACE")
+    @support.requires_mac_ver(10, 5)
     def testFDPassSeparateMinSpace(self):
         # Pass two FDs in two separate arrays, receiving them into the
         # minimum space for two arrays.