diff --git a/akka-actor/src/main/scala/akka/actor/RepointableActorRef.scala b/akka-actor/src/main/scala/akka/actor/RepointableActorRef.scala
index 1385e7053c..02aef18564 100644
--- a/akka-actor/src/main/scala/akka/actor/RepointableActorRef.scala
+++ b/akka-actor/src/main/scala/akka/actor/RepointableActorRef.scala
@@ -49,7 +49,7 @@ private[akka] class RepointableActorRef(
   @volatile private var _lookupDoNotCallMeDirectly: Cell = _
 
   def underlying: Cell = Unsafe.instance.getObjectVolatile(this, cellOffset).asInstanceOf[Cell]
-  private def lookup = Unsafe.instance.getObjectVolatile(this, lookupOffset).asInstanceOf[Cell]
+  def lookup = Unsafe.instance.getObjectVolatile(this, lookupOffset).asInstanceOf[Cell]
 
   @tailrec final def swapCell(next: Cell): Cell = {
     val old = underlying
@@ -173,13 +173,10 @@ private[akka] class UnstartedCell(val systemImpl: ActorSystemImpl,
 
   // use Envelope to keep on-send checks in the same place ACCESS MUST BE PROTECTED BY THE LOCK
   private[this] final val queue = new JLinkedList[Any]()
-  // ACCESS MUST BE PROTECTED BY THE LOCK, is used to detect when messages are sent during replace
-  private[this] final var isBeingReplaced = false
 
   import systemImpl.settings.UnstartedPushTimeout.{ duration ⇒ timeout }
 
   def replaceWith(cell: Cell): Unit = locked {
-    isBeingReplaced = true
     try {
       while (!queue.isEmpty) {
         queue.poll() match {
@@ -188,7 +185,6 @@ private[akka] class UnstartedCell(val systemImpl: ActorSystemImpl,
         }
       }
     } finally {
-      isBeingReplaced = false
       self.swapCell(cell)
     }
   }
@@ -234,7 +230,7 @@ private[akka] class UnstartedCell(val systemImpl: ActorSystemImpl,
           cell.sendSystemMessage(msg)
         } else {
           // systemMessages that are sent during replace need to jump to just after the last system message in the queue, so it's processed before other messages
-          val wasEnqueued = if (isBeingReplaced && !queue.isEmpty()) {
+          val wasEnqueued = if ((self.lookup ne this) && (self.underlying eq this) && !queue.isEmpty()) {
             @tailrec def tryEnqueue(i: JListIterator[Any] = queue.listIterator(), insertIntoIndex: Int = -1): Boolean =
               if (i.hasNext())
                 tryEnqueue(i,
diff --git a/project/AkkaBuild.scala b/project/AkkaBuild.scala
index 9d91a40e91..70911c9080 100644
--- a/project/AkkaBuild.scala
+++ b/project/AkkaBuild.scala
@@ -30,7 +30,7 @@ object AkkaBuild extends Build {
     organization := "com.typesafe.akka",
     version      := "2.2-SNAPSHOT",
     // FIXME: use 2.10.0 for final
-    scalaVersion := System.getProperty("akka.scalaVersion", "2.10.0-RC2")
+    scalaVersion := System.getProperty("akka.scalaVersion", "2.10.0-RC3")
   )
 
   lazy val akka = Project(
@@ -695,7 +695,7 @@ object Dependencies {
       val junit       = "junit"                       % "junit"                        % "4.10"             % "test" // Common Public License 1.0
       val logback     = "ch.qos.logback"              % "logback-classic"              % "1.0.7"            % "test" // EPL 1.0 / LGPL 2.1
       val mockito     = "org.mockito"                 % "mockito-all"                  % "1.8.1"            % "test" // MIT
-      val scalatest   = "org.scalatest"               % "scalatest"                    % "1.8-B2"           % "test" cross CrossVersion.full // ApacheV2
+      val scalatest   = "org.scalatest"               % "scalatest"                    % "1.8-B1"           % "test" cross CrossVersion.full // ApacheV2
       val scalacheck  = "org.scalacheck"              % "scalacheck"                   % "1.10.0"           % "test" cross CrossVersion.full // New BSD
       val ariesProxy  = "org.apache.aries.proxy"      % "org.apache.aries.proxy.impl"  % "0.3"              % "test" // ApacheV2
       val pojosr      = "com.googlecode.pojosr"       % "de.kalpatec.pojosr.framework" % "0.1.4"            % "test" // ApacheV2