diff --git a/akka-actor-tests/src/test/scala/akka/actor/ActorFireForgetRequestReplySpec.scala b/akka-actor-tests/src/test/scala/akka/actor/ActorFireForgetRequestReplySpec.scala
index 9af4e85e6f..4dee46862b 100644
--- a/akka-actor-tests/src/test/scala/akka/actor/ActorFireForgetRequestReplySpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/actor/ActorFireForgetRequestReplySpec.scala
@@ -85,7 +85,7 @@ class ActorFireForgetRequestReplySpec extends WordSpec with MustMatchers with Be
       filterEvents(EventFilter[Exception]("Expected")) {
         val supervisor = Supervisor(OneForOneStrategy(List(classOf[Exception]), Some(0)))
         val actor = actorOf(Props[CrashingActor].withSupervisor(supervisor))
-        actor.isRunning must be(true)
+        actor.isShutdown must be(false)
         actor ! "Die"
         state.finished.await
         sleepFor(1 second)
diff --git a/akka-actor-tests/src/test/scala/akka/actor/ActorRefSpec.scala b/akka-actor-tests/src/test/scala/akka/actor/ActorRefSpec.scala
index 4fa2d990a6..3800a482d4 100644
--- a/akka-actor-tests/src/test/scala/akka/actor/ActorRefSpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/actor/ActorRefSpec.scala
@@ -363,7 +363,6 @@ class ActorRefSpec extends WordSpec with MustMatchers with TestKit {
       fnull.get must be("null")
 
       awaitCond(ref.isShutdown, 100 millis)
-      ref.isRunning must be(false)
     }
 
     "restart when Kill:ed" in {
diff --git a/akka-actor-tests/src/test/scala/akka/actor/RestartStrategySpec.scala b/akka-actor-tests/src/test/scala/akka/actor/RestartStrategySpec.scala
index 454ca8000f..96aeeb2df5 100644
--- a/akka-actor-tests/src/test/scala/akka/actor/RestartStrategySpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/actor/RestartStrategySpec.scala
@@ -100,7 +100,7 @@ class RestartStrategySpec extends JUnitSuite with BeforeAndAfterAll {
 
     (1 to 100) foreach { _ ⇒ slave ! Crash }
     assert(countDownLatch.await(120, TimeUnit.SECONDS))
-    assert(slave.isRunning)
+    assert(!slave.isShutdown)
   }
 
   @Test
@@ -160,7 +160,7 @@ class RestartStrategySpec extends JUnitSuite with BeforeAndAfterAll {
 
     assert(thirdRestartLatch.tryAwait(1, TimeUnit.SECONDS))
 
-    assert(slave.isRunning)
+    assert(!slave.isShutdown)
   }
 
   @Test
@@ -199,7 +199,7 @@ class RestartStrategySpec extends JUnitSuite with BeforeAndAfterAll {
     // test restart and post restart ping
     assert(restartLatch.tryAwait(1, TimeUnit.SECONDS))
 
-    assert(slave.isRunning)
+    assert(!slave.isShutdown)
 
     // now crash again... should not restart
     slave ! Crash
@@ -213,7 +213,7 @@ class RestartStrategySpec extends JUnitSuite with BeforeAndAfterAll {
     slave ! Crash
     assert(stopLatch.tryAwait(1, TimeUnit.SECONDS))
     sleep(500L)
-    assert(!slave.isRunning)
+    assert(slave.isShutdown)
   }
 
   @Test
@@ -251,7 +251,7 @@ class RestartStrategySpec extends JUnitSuite with BeforeAndAfterAll {
     // test restart and post restart ping
     assert(restartLatch.tryAwait(1, TimeUnit.SECONDS))
 
-    assert(slave.isRunning)
+    assert(!slave.isShutdown)
 
     // now crash again... should not restart
     slave ! Crash
@@ -267,7 +267,7 @@ class RestartStrategySpec extends JUnitSuite with BeforeAndAfterAll {
 
     assert(maxNoOfRestartsLatch.tryAwait(1, TimeUnit.SECONDS))
     sleep(500L)
-    assert(!slave.isRunning)
+    assert(slave.isShutdown)
   }
 }
 
diff --git a/akka-actor-tests/src/test/scala/akka/actor/dispatch/ActorModelSpec.scala b/akka-actor-tests/src/test/scala/akka/actor/dispatch/ActorModelSpec.scala
index f6d287f123..93c7720b86 100644
--- a/akka-actor-tests/src/test/scala/akka/actor/dispatch/ActorModelSpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/actor/dispatch/ActorModelSpec.scala
@@ -350,7 +350,7 @@ abstract class ActorModelSpec extends JUnitSuite {
     a.stop
     b.stop
 
-    while (a.isRunning && b.isRunning) {} //Busy wait for termination
+    while (!a.isShutdown && !b.isShutdown) {} //Busy wait for termination
 
     assertRefDefaultZero(a)(registers = 1, unregisters = 1, msgsReceived = 1, msgsProcessed = 1)
     assertRefDefaultZero(b)(registers = 1, unregisters = 1, msgsReceived = 1, msgsProcessed = 1)
diff --git a/akka-actor-tests/src/test/scala/akka/routing/RoutingSpec.scala b/akka-actor-tests/src/test/scala/akka/routing/RoutingSpec.scala
index a2bda3ced8..ad2600b47a 100644
--- a/akka-actor-tests/src/test/scala/akka/routing/RoutingSpec.scala
+++ b/akka-actor-tests/src/test/scala/akka/routing/RoutingSpec.scala
@@ -30,7 +30,7 @@ class RoutingSpec extends WordSpec with MustMatchers {
 
       val props = RoutedProps(() ⇒ new DirectRouter, List(actor1))
       val actor = Routing.actorOf(props, "foo")
-      actor.isRunning must be(true)
+      actor.isShutdown must be(false)
     }
 
     "throw IllegalArgumentException at construction when no connections" in {
@@ -94,7 +94,7 @@ class RoutingSpec extends WordSpec with MustMatchers {
 
       val props = RoutedProps(() ⇒ new RoundRobinRouter, List(actor1))
       val actor = Routing.actorOf(props, "foo")
-      actor.isRunning must be(true)
+      actor.isShutdown must be(false)
     }
 
     "throw IllegalArgumentException at construction when no connections" in {
@@ -218,7 +218,7 @@ class RoutingSpec extends WordSpec with MustMatchers {
 
       val props = RoutedProps(() ⇒ new RandomRouter, List(actor1))
       val actor = Routing.actorOf(props, "foo")
-      actor.isRunning must be(true)
+      actor.isShutdown must be(false)
     }
 
     "throw IllegalArgumentException at construction when no connections" in {
@@ -231,7 +231,7 @@ class RoutingSpec extends WordSpec with MustMatchers {
       }
     }
 
-    "deliver messages in a random fashion" in {
+    "deliver messages in a random fashion" ignore {
 
     }
 
diff --git a/akka-actor-tests/src/test/scala/akka/ticket/Ticket1111Spec.scala b/akka-actor-tests/src/test/scala/akka/ticket/Ticket1111Spec.scala
index f10093c613..0d7b3f60d5 100644
--- a/akka-actor-tests/src/test/scala/akka/ticket/Ticket1111Spec.scala
+++ b/akka-actor-tests/src/test/scala/akka/ticket/Ticket1111Spec.scala
@@ -80,7 +80,7 @@ class Ticket1111Spec extends WordSpec with MustMatchers {
         .withRouter(() ⇒ new ScatterGatherFirstCompletedRouter())
       val actor = Routing.actorOf(props, "foo")
 
-      actor.isRunning must be(true)
+      actor.isShutdown must be(false)
 
     }
 
diff --git a/akka-actor/src/main/scala/akka/actor/ActorCell.scala b/akka-actor/src/main/scala/akka/actor/ActorCell.scala
index 60a953c1e8..0cf42079b1 100644
--- a/akka-actor/src/main/scala/akka/actor/ActorCell.scala
+++ b/akka-actor/src/main/scala/akka/actor/ActorCell.scala
@@ -232,7 +232,6 @@ private[akka] class ActorCell(
 
   def dispatcher: MessageDispatcher = props.dispatcher
 
-  def isRunning: Boolean = !isShutdown
   def isShutdown: Boolean = mailbox.isClosed
 
   @volatile //This must be volatile
diff --git a/akka-actor/src/main/scala/akka/actor/ActorRef.scala b/akka-actor/src/main/scala/akka/actor/ActorRef.scala
index 3b8fd0dc8d..940a60e597 100644
--- a/akka-actor/src/main/scala/akka/actor/ActorRef.scala
+++ b/akka-actor/src/main/scala/akka/actor/ActorRef.scala
@@ -117,11 +117,6 @@ abstract class ActorRef extends ActorRefShared with UntypedChannel with ReplyCha
    */
   def stop(): Unit
 
-  /**
-   * Is the actor running?
-   */
-  def isRunning: Boolean // TODO remove this method
-
   /**
    * Is the actor shut down?
    */
@@ -202,14 +197,9 @@ class LocalActorRef private[akka] (
   private[this] val actorCell = new ActorCell(this, props, receiveTimeout, hotswap)
   actorCell.start()
 
-  /**
-   * Is the actor running?
-   */
-  //FIXME TODO REMOVE THIS, NO REPLACEMENT
-  def isRunning: Boolean = actorCell.isRunning
-
   /**
    * Is the actor shut down?
+   * If this method returns true, it will never return false again, but if it returns false, you cannot be sure if it's alive still (race condition)
    */
   //FIXME TODO RENAME TO isTerminated
   def isShutdown: Boolean = actorCell.isShutdown
@@ -271,7 +261,7 @@ class LocalActorRef private[akka] (
   // @deprecated("This method does a spin-lock to block for the actor, which might never be there, do not use this", "2.0")
   protected[akka] def underlyingActorInstance: Actor = {
     var instance = actorCell.actor
-    while ((instance eq null) && actorCell.isRunning) {
+    while ((instance eq null) && !actorCell.isShutdown) {
       try { Thread.sleep(1) } catch { case i: InterruptedException ⇒ }
       instance = actorCell.actor
     }
@@ -330,8 +320,6 @@ private[akka] case class RemoteActorRef private[akka] (
   @volatile
   private var running: Boolean = true
 
-  def isRunning: Boolean = running
-
   def isShutdown: Boolean = !running
 
   RemoteModule.ensureEnabled()
diff --git a/akka-actor/src/main/scala/akka/routing/Routing.scala b/akka-actor/src/main/scala/akka/routing/Routing.scala
index 562890469d..61acc0240a 100644
--- a/akka-actor/src/main/scala/akka/routing/Routing.scala
+++ b/akka-actor/src/main/scala/akka/routing/Routing.scala
@@ -232,8 +232,6 @@ private[akka] class RoutedActorRef(val routedProps: RoutedProps, val address: St
   @volatile
   private var running: Boolean = true
 
-  def isRunning: Boolean = running
-
   def isShutdown: Boolean = !running
 
   def stop() {
diff --git a/akka-actor/src/main/scala/akka/util/ListenerManagement.scala b/akka-actor/src/main/scala/akka/util/ListenerManagement.scala
index 9462559ebb..0607ccb6a9 100644
--- a/akka-actor/src/main/scala/akka/util/ListenerManagement.scala
+++ b/akka-actor/src/main/scala/akka/util/ListenerManagement.scala
@@ -55,14 +55,8 @@ trait ListenerManagement {
       val iterator = listeners.iterator
       while (iterator.hasNext) {
         val listener = iterator.next
-        // Uncomment if those exceptions are so frequent as to bottleneck
-        // if (listener.isShutdown) iterator.remove() else
-        try {
-          listener ! msg
-        } catch {
-          case e: ActorInitializationException ⇒
-            if (listener.isShutdown) iterator.remove()
-        }
+        if (listener.isShutdown) iterator.remove()
+        else listener ! msg
       }
     }
   }
@@ -74,7 +68,8 @@ trait ListenerManagement {
     val iterator = listeners.iterator
     while (iterator.hasNext) {
       val listener = iterator.next
-      if (listener.isRunning) f(listener)
+      if (listener.isShutdown) iterator.remove()
+      else f(listener)
     }
   }
 }
diff --git a/akka-camel/src/main/scala/akka/camel/component/ActorComponent.scala b/akka-camel/src/main/scala/akka/camel/component/ActorComponent.scala
index 1bfd13fa4f..3196c78986 100644
--- a/akka-camel/src/main/scala/akka/camel/component/ActorComponent.scala
+++ b/akka-camel/src/main/scala/akka/camel/component/ActorComponent.scala
@@ -266,17 +266,10 @@ private[akka] class AsyncCallbackAdapter(exchange: Exchange, callback: AsyncCall
   val address = exchange.getExchangeId
 
   @volatile
-  private var running: Boolean = false
-
-  def isRunning: Boolean = running
+  private var running: Boolean = true
 
   def isShutdown: Boolean = !running
 
-  def start = {
-    running = true
-    this
-  }
-
   def suspend(): Unit = ()
 
   def resume(): Unit = ()
@@ -293,7 +286,7 @@ private[akka] class AsyncCallbackAdapter(exchange: Exchange, callback: AsyncCall
    * @param message reply message
    * @param sender ignored
    */
-  protected[akka] def postMessageToMailbox(message: Any, channel: UntypedChannel) = {
+  protected[akka] def postMessageToMailbox(message: Any, channel: UntypedChannel) = if(running) {
     message match {
       case Ack          ⇒ { /* no response message to set */ }
       case msg: Failure ⇒ exchange.fromFailureMessage(msg)
@@ -302,16 +295,13 @@ private[akka] class AsyncCallbackAdapter(exchange: Exchange, callback: AsyncCall
     callback.done(false)
   }
 
-  def dispatcher_=(md: MessageDispatcher): Unit = unsupported
   def dispatcher: MessageDispatcher = unsupported
   def link(actorRef: ActorRef): ActorRef = unsupported
   def unlink(actorRef: ActorRef): ActorRef = unsupported
-  def shutdownLinkedActors: Unit = unsupported
   def supervisor: Option[ActorRef] = unsupported
+
   protected[akka] def postMessageToMailboxAndCreateFutureResultWithTimeout(message: Any, timeout: Timeout, channel: UntypedChannel) = unsupported
   protected[akka] def restart(reason: Throwable, maxNrOfRetries: Option[Int], withinTimeRange: Option[Int]): Unit = unsupported
-  protected[akka] def registerSupervisorAsRemoteActor = unsupported
-  protected[akka] def supervisor_=(sup: Option[ActorRef]): Unit = unsupported
 
   private def unsupported = throw new UnsupportedOperationException("Not supported for %s" format classOf[AsyncCallbackAdapter].getName)
 }
diff --git a/akka-testkit/src/test/scala/akka/testkit/TestActorRefSpec.scala b/akka-testkit/src/test/scala/akka/testkit/TestActorRefSpec.scala
index 4176937159..908ecc9c0d 100644
--- a/akka-testkit/src/test/scala/akka/testkit/TestActorRefSpec.scala
+++ b/akka-testkit/src/test/scala/akka/testkit/TestActorRefSpec.scala
@@ -162,7 +162,6 @@ class TestActorRefSpec extends WordSpec with MustMatchers with BeforeAndAfterEac
         intercept[ActorKilledException] {
           (a ? PoisonPill).get
         }
-        a must not be ('running)
         a must be('shutdown)
         assertThread
       }