diff --git a/bin/BFT-SMaRt.jar b/bin/BFT-SMaRt.jar
index 5f7323344cd80e228d5137d8762aa5b6e1bfac04..a9f3cab4b0eaedada2aebe86a39d02cd5bc23841 100644
Binary files a/bin/BFT-SMaRt.jar and b/bin/BFT-SMaRt.jar differ
diff --git a/src/bftsmart/clientsmanagement/ClientsManager.java b/src/bftsmart/clientsmanagement/ClientsManager.java
index 3fc85f3ef6f426c5c37fc0f39d3112bc7a7ac27f..8362afb33c05d0cbe91854e99bce2883f9ece444 100644
--- a/src/bftsmart/clientsmanagement/ClientsManager.java
+++ b/src/bftsmart/clientsmanagement/ClientsManager.java
@@ -31,6 +31,8 @@ import bftsmart.tom.leaderchange.RequestsTimer;
 import bftsmart.tom.server.RequestVerifier;
 import bftsmart.tom.util.TOMUtil;
 import java.nio.ByteBuffer;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.logging.Level;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -52,6 +54,9 @@ public class ClientsManager {
     private ServerCommunicationSystem cs;
     
     private ReentrantLock clientsLock = new ReentrantLock();
+    
+    private LinkedBlockingQueue<TOMMessage> ackQueue;
+    private Thread ackReplier;
 
     public ClientsManager(ServerViewController controller, RequestsTimer timer, RequestVerifier verifier, 
             ServerCommunicationSystem cs, ExecutionManager manager, DeliveryThread dt) {
@@ -62,6 +67,25 @@ public class ClientsManager {
         this.cs = cs;
         this.manager = manager;
         this.dt = dt;
+        
+        ackQueue = new LinkedBlockingQueue<>();
+        ackReplier = new Thread() {
+            
+            public void run() {
+                
+                while (true) {
+                    
+                    try {
+                        TOMMessage request = ackQueue.take();
+                        cs.send(new int[]{request.getSender()}, request.reply);
+                    } catch (InterruptedException ex) {
+                        java.util.logging.Logger.getLogger(ClientsManager.class.getName()).log(Level.SEVERE, null, ex);
+                    }
+                }
+            }
+        };
+        
+        ackReplier.start();
     }
 
     /**
@@ -447,24 +471,12 @@ public class ClientsManager {
             TOMMessage ack = new TOMMessage(controller.getStaticConf().getProcessId(), request.getSession(), request.getSequence(), 
                     request.getOperationId(), buff.array(), request.getViewID(), TOMMessageType.ACK);
 
-            //Launch another thread to not interfere with the netty worker
-            Thread t = new Thread() {
-
-                public void run() {
-
-                    MessageContext msgCtx = new MessageContext(request.getSender(), request.getViewID(), request.getReqType(),
-                        request.getSession(), request.getSequence(), request.getOperationId(), request.getReplyServer(), request.serializedMessageSignature,
-                        System.currentTimeMillis(), 0, 0, -1, -1, -1, null, null, false);
-                    
-                    request.reply = ack;
-                    request.msgCtx = msgCtx;
-                    
-                    //cs.send(new int[]{request.getSender()}, ack);
-                    dt.getReplyManager().send(request);
-                }
-            };
-
-            t.start();
+            request.reply = ack;
+            try {
+                ackQueue.put(request);
+            } catch (InterruptedException ex) {
+                java.util.logging.Logger.getLogger(ClientsManager.class.getName()).log(Level.SEVERE, null, ex);
+            }
                                     
             request.ackSent = true;
         }