diff --git a/CHANGES.rst b/CHANGES.rst
index f81a51dc7..6f427f677 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,3 +1,14 @@
+Changes in synapse v0.12.0-rc2 (2015-12-14)
+===========================================
+
+* Add caches for whether rooms have been forgotten by a user (PR #434)
+* Remove instructions to use ``--process-dependency-link`` since all of the
+  dependencies of synapse are on PyPI (PR #436)
+* Parallelise the processing of ``/sync`` requests (PR #437)
+* Fix race updating presence in ``/events`` (PR #444)
+* Fix bug back-populating search results (PR #441)
+* Fix bug calculating state in ``/sync`` requests (PR #442)
+
 Changes in synapse v0.12.0-rc1 (2015-12-10)
 ===========================================
 
diff --git a/synapse/__init__.py b/synapse/__init__.py
index c357f8f9c..e07c26ccd 100644
--- a/synapse/__init__.py
+++ b/synapse/__init__.py
@@ -16,4 +16,4 @@
 """ This is a reference implementation of a Matrix home server.
 """
 
-__version__ = "0.12.0-rc1"
+__version__ = "0.12.0-rc2"
diff --git a/synapse/handlers/events.py b/synapse/handlers/events.py
index fe300433e..576d77e0e 100644
--- a/synapse/handlers/events.py
+++ b/synapse/handlers/events.py
@@ -69,7 +69,12 @@ class EventStreamHandler(BaseHandler):
             A deferred that completes once their presence has been updated.
         """
         if user not in self._streams_per_user:
-            self._streams_per_user[user] = 0
+            # Make sure we set the streams per user to 1 here rather than
+            # setting it to zero and incrementing the value below.
+            # Otherwise this may race with stopped_stream causing the
+            # user to be erased from the map before we have a chance
+            # to increment it.
+            self._streams_per_user[user] = 1
             if user in self._stop_timer_per_user:
                 try:
                     self.clock.cancel_call_later(
@@ -79,8 +84,8 @@ class EventStreamHandler(BaseHandler):
                     logger.exception("Failed to cancel event timer")
             else:
                 yield started_user_eventstream(self.distributor, user)
-
-        self._streams_per_user[user] += 1
+        else:
+            self._streams_per_user[user] += 1
 
     def stopped_stream(self, user):
         """If there are no streams for a user this starts a timer that will
diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py
index 2e5eddd25..09a05b08e 100644
--- a/synapse/storage/registration.py
+++ b/synapse/storage/registration.py
@@ -258,10 +258,10 @@ class RegistrationStore(SQLBaseStore):
     @defer.inlineCallbacks
     def user_add_threepid(self, user_id, medium, address, validated_at, added_at):
         yield self._simple_upsert("user_threepids", {
-            "user_id": user_id,
             "medium": medium,
             "address": address,
         }, {
+            "user_id": user_id,
             "validated_at": validated_at,
             "added_at": added_at,
         })