Hmm...maybe this is the second part of the disabling-network commit? Who knows.

plugins/Services.py

@@ -220,6 +220,8 @@ class Services(privmsgs.CapabilityCheckingPrivmsg):
         disabled = self.registryValue('disabledNetworks')
         if irc.network in disabled or \
            irc.state.supported.get('NETWORK', '') in disabled:
+            self.log.verbose('Ignoring message from %s, %s is disabled.',
+                             irc, irc.network)
             return
         self.__parent.__call__(irc, msg)
         nick = self._getNick()