diff --git a/akka-core/src/main/scala/actor/Actor.scala b/akka-core/src/main/scala/actor/Actor.scala
index 497cfb185a..15453e0e34 100644
--- a/akka-core/src/main/scala/actor/Actor.scala
+++ b/akka-core/src/main/scala/actor/Actor.scala
@@ -505,6 +505,11 @@ trait Actor extends Logging {
    */
   def reply_?(message: Any): Boolean = self.reply_?(message)
 
+  /**
+  * Is the actor able to handle the message passed in as arguments?
+  */
+  def isDefinedAt(message: Any): Boolean = base.isDefinedAt(message)
+
   // =========================================
   // ==== INTERNAL IMPLEMENTATION DETAILS ====
   // =========================================
diff --git a/akka-core/src/main/scala/actor/ActorRef.scala b/akka-core/src/main/scala/actor/ActorRef.scala
index 3c4d251074..1a082ed2b8 100644
--- a/akka-core/src/main/scala/actor/ActorRef.scala
+++ b/akka-core/src/main/scala/actor/ActorRef.scala
@@ -347,7 +347,7 @@ trait ActorRef extends TransactionManagement {
   /**
    * Is the actor able to handle the message passed in as arguments?
    */
-  def isDefinedAt(message: Any): Boolean = actor.base.isDefinedAt(message)
+  def isDefinedAt(message: Any): Boolean = actor.isDefinedAt(message)
   
   /**
    * Is the actor is serializable?
diff --git a/akka-core/src/main/scala/routing/Iterators.scala b/akka-core/src/main/scala/routing/Iterators.scala
index fbb200a110..9f7cb18ff8 100644
--- a/akka-core/src/main/scala/routing/Iterators.scala
+++ b/akka-core/src/main/scala/routing/Iterators.scala
@@ -22,6 +22,9 @@ class CyclicIterator[T](items: List[T]) extends InfiniteIterator[T] {
     current = nc.tail
     nc.head
   }
+
+  override def exists(f: T => Boolean): Boolean = items.exists(f)
+
 }
 
 /**
@@ -32,4 +35,7 @@ class SmallestMailboxFirstIterator(items : List[ActorRef]) extends InfiniteItera
   def hasNext = items != Nil
 
   def next = items.reduceLeft((a1, a2) => if (a1.mailboxSize < a2.mailboxSize) a1 else a2)
+
+  override def exists(f: ActorRef => Boolean): Boolean = items.exists(f)
+
 }
diff --git a/akka-core/src/main/scala/routing/Routers.scala b/akka-core/src/main/scala/routing/Routers.scala
index 4cc13cdbc3..848527b078 100644
--- a/akka-core/src/main/scala/routing/Routers.scala
+++ b/akka-core/src/main/scala/routing/Routers.scala
@@ -34,4 +34,7 @@ trait LoadBalancer extends Dispatcher { self: Actor =>
   protected def seq: InfiniteIterator[ActorRef]
 
   protected def routes = { case x if seq.hasNext => seq.next }
+
+  override def isDefinedAt(msg: Any) = seq.exists( _.isDefinedAt(msg) ) 
+
 }
diff --git a/akka-core/src/test/scala/ActorPatternsTest.scala b/akka-core/src/test/scala/ActorPatternsTest.scala
index 65c9dbf9f4..2227049791 100644
--- a/akka-core/src/test/scala/ActorPatternsTest.scala
+++ b/akka-core/src/test/scala/ActorPatternsTest.scala
@@ -116,4 +116,53 @@ class ActorPatternsTest extends junit.framework.TestCase with Suite with MustMat
     num.get must be (2)
     for(a <- List(i,a1,a2,a3)) a.stop
   }
+
+  @Test def testIsDefinedAt = {
+	import se.scalablesolutions.akka.actor.ActorRef  
+	  
+	val (testMsg1,testMsg2,testMsg3,testMsg4) = ("test1","test2","test3","test4")
+
+    val t1 = actorOf( new Actor() {
+      def receive = {
+        case `testMsg1` => self.reply(3)
+        case `testMsg2` => self.reply(7)
+      }
+    } ).start
+    
+    val t2 = actorOf( new Actor() {
+      def receive = {
+        case `testMsg1` => self.reply(3)
+        case `testMsg2` => self.reply(7)
+      }
+    } ).start
+    
+    val t3 = actorOf( new Actor() {
+      def receive = {
+        case `testMsg1` => self.reply(3)
+        case `testMsg2` => self.reply(7)
+      }
+    } ).start
+    
+    val t4 = actorOf( new Actor() {
+      def receive = {
+        case `testMsg1` => self.reply(3)
+        case `testMsg2` => self.reply(7)
+      }
+    } ).start
+
+    val d1 = loadBalancerActor(new SmallestMailboxFirstIterator(t1 :: t2 :: Nil))
+    val d2 = loadBalancerActor(new CyclicIterator[ActorRef](t3 :: t4 :: Nil))
+    
+    t1.isDefinedAt(testMsg1) must be (true)
+    t1.isDefinedAt(testMsg3) must be (false)
+    t2.isDefinedAt(testMsg1) must be (true)
+    t2.isDefinedAt(testMsg3) must be (false)
+    d1.isDefinedAt(testMsg1) must be (true)
+    d1.isDefinedAt(testMsg3) must be (false)
+    d2.isDefinedAt(testMsg1) must be (true)
+    d2.isDefinedAt(testMsg3) must be (false)
+	
+    for(a <- List(t1,t2,d1,d2)) a.stop
+  }
+
 }
diff --git a/project/build/AkkaProject.scala b/project/build/AkkaProject.scala
index 1f0f1d8276..f7888d5000 100644
--- a/project/build/AkkaProject.scala
+++ b/project/build/AkkaProject.scala
@@ -120,7 +120,7 @@ class AkkaParent(info: ProjectInfo) extends DefaultProject(info) {
     " dist/akka-jta_%s-%s.jar".format(buildScalaVersion, version)
     )
 
-  //Exclude slf4j1.5.11 from the classpath, it's conflicting...
+  // Exclude slf4j1.5.11 from the classpath, it's conflicting...
   override def runClasspath = super.runClasspath --- (super.runClasspath ** "slf4j*1.5.11.jar")
 
   // ------------------------------------------------------------
@@ -187,8 +187,8 @@ class AkkaParent(info: ProjectInfo) extends DefaultProject(info) {
     val h2_lzf = "voldemort.store.compress" % "h2-lzf" % "1.0" % "compile"
     val jsr166x = "jsr166x" % "jsr166x" % "1.0" % "compile"
     val jta_1_1 = "org.apache.geronimo.specs" % "geronimo-jta_1.1_spec" % "1.1.1" % "compile" intransitive()
-    val werkz = "org.codehaus.aspectwerkz" % "aspectwerkz-nodeps-jdk5" % "2.1" % "compile"
-    val werkz_core = "org.codehaus.aspectwerkz" % "aspectwerkz-jdk5" % "2.1" % "compile"
+    val werkz = "org.codehaus.aspectwerkz" % "aspectwerkz-nodeps-jdk5" % "2.2" % "compile"
+    val werkz_core = "org.codehaus.aspectwerkz" % "aspectwerkz-jdk5" % "2.2" % "compile"
     val configgy = "net.lag" % "configgy" % "2.8.0.RC3-1.5.2-SNAPSHOT" % "compile"
     val guicey = "org.guiceyfruit" % "guice-all" % "2.0" % "compile"
     val aopalliance = "aopalliance" % "aopalliance" % "1.0" % "compile"
@@ -298,7 +298,7 @@ class AkkaParent(info: ProjectInfo) extends DefaultProject(info) {
   }
 
   // ================= TEST ==================
-  class AkkaActiveObjectTestProject(info: ProjectInfo) extends DefaultProject(info) {
+  class AkkaActiveObjectTestProject(info: ProjectInfo) extends AkkaDefaultProject(info, distPath) {
     // testing
     val junit = "junit" % "junit" % "4.5" % "test"
     val jmock = "org.jmock" % "jmock" % "2.4.0" % "test"