Disabled test_xmlrpc:test_404. It's causing lots of false alarms.
I also disabled a test in test_ssl which requires network access to svn.python.org. This fixes a bug Skip has reported a while ago.
diff --git a/Lib/test/test_ssl.py b/Lib/test/test_ssl.py
index 7e78b4c..a82aa6d 100644
--- a/Lib/test/test_ssl.py
+++ b/Lib/test/test_ssl.py
@@ -37,7 +37,8 @@
 class BasicTests(unittest.TestCase):
 
     def testSSLconnect(self):
-        import os
+        if not test_support.is_resource_enabled('network'):
+            return
         s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                             cert_reqs=ssl.CERT_NONE)
         s.connect(("svn.python.org", 443))
@@ -101,7 +102,6 @@
 class NetworkTests(unittest.TestCase):
 
     def testConnect(self):
-        import os
         s = ssl.wrap_socket(socket.socket(socket.AF_INET),
                             cert_reqs=ssl.CERT_NONE)
         s.connect(("svn.python.org", 443))