diff --git a/CHANGELOG.md b/CHANGELOG.md
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,9 @@
 
+Version 0.8
+-----
+
+* No more restriction on the number of output messages, which would lead to throttling.
+
 Version 0.7.4.2
 -----
 
diff --git a/Simulation/Aivika/Distributed/Optimistic/Internal/DIO.hs b/Simulation/Aivika/Distributed/Optimistic/Internal/DIO.hs
--- a/Simulation/Aivika/Distributed/Optimistic/Internal/DIO.hs
+++ b/Simulation/Aivika/Distributed/Optimistic/Internal/DIO.hs
@@ -74,8 +74,6 @@
               -- ^ The name of the logical process.
               dioUndoableLogSizeThreshold :: Int,
               -- ^ The undoable log size threshold used for detecting an overflow
-              dioOutputMessageQueueSizeThreshold :: Int,
-              -- ^ The output message queue size threshold used for detecting an overflow
               dioTransientMessageQueueSizeThreshold :: Int,
               -- ^ The transient message queue size threshold used for detecting an overflow
               dioSyncTimeout :: Int,
@@ -194,7 +192,6 @@
   DIOParams { dioLoggingPriority = WARNING,
               dioName = "LP",
               dioUndoableLogSizeThreshold = 1000000,
-              dioOutputMessageQueueSizeThreshold = 10000,
               dioTransientMessageQueueSizeThreshold = 10000,
               dioSyncTimeout = 60000000,
               dioAllowPrematureIO = False,
@@ -312,7 +309,7 @@
 handleException :: DIOParams -> SomeException -> DP.Process ()
 handleException ps e =
   do ---
-     logProcess ps ERROR $ "Exception occured: " ++ show e
+     logProcess ps ERROR $ "Exception occurred: " ++ show e
      ---
      C.throwM e
 
diff --git a/Simulation/Aivika/Distributed/Optimistic/Internal/Event.hs b/Simulation/Aivika/Distributed/Optimistic/Internal/Event.hs
--- a/Simulation/Aivika/Distributed/Optimistic/Internal/Event.hs
+++ b/Simulation/Aivika/Distributed/Optimistic/Internal/Event.hs
@@ -282,13 +282,11 @@
   Event $ \p ->
   do let q = runEventQueue $ pointRun p
      n1 <- liftIOUnsafe $ logSize (queueLog q)
-     n2 <- liftIOUnsafe $ outputMessageQueueSize (queueOutputMessages q)
-     n3 <- liftIOUnsafe $ transientMessageQueueSize (queueTransientMessages q)
+     n2 <- liftIOUnsafe $ transientMessageQueueSize (queueTransientMessages q)
      ps <- dioParams
      let th1 = dioUndoableLogSizeThreshold ps
-         th2 = dioOutputMessageQueueSizeThreshold ps
-         th3 = dioTransientMessageQueueSizeThreshold ps
-     if (n1 >= th1) || (n2 >= th2) || (n3 >= th3)
+         th2 = dioTransientMessageQueueSizeThreshold ps
+     if (n1 >= th1) || (n2 >= th2)
        then do logDIO NOTICE $
                  "t = " ++ (show $ pointTime p) ++
                  ": detected the event overflow"
diff --git a/Simulation/Aivika/Distributed/Optimistic/Internal/TimeServer.hs b/Simulation/Aivika/Distributed/Optimistic/Internal/TimeServer.hs
--- a/Simulation/Aivika/Distributed/Optimistic/Internal/TimeServer.hs
+++ b/Simulation/Aivika/Distributed/Optimistic/Internal/TimeServer.hs
@@ -482,7 +482,7 @@
 handleTimeServerException :: TimeServer -> SomeException -> DP.Process ()
 handleTimeServerException server e =
   do ---
-     logTimeServer server ERROR $ "Exception occured: " ++ show e
+     logTimeServer server ERROR $ "Exception occurred: " ++ show e
      ---
      C.throwM e
 
diff --git a/aivika-distributed.cabal b/aivika-distributed.cabal
--- a/aivika-distributed.cabal
+++ b/aivika-distributed.cabal
@@ -1,5 +1,5 @@
 name:            aivika-distributed
-version:         0.7.4.2
+version:         0.8
 synopsis:        Parallel distributed discrete event simulation module for the Aivika library
 description:
     This package extends the aivika-transformers [1] package and allows running parallel distributed simulations.
@@ -121,8 +121,8 @@
                      containers >= 0.4.0.0,
                      exceptions >= 0.8.0.2,
                      distributed-process >= 0.6.1,
-                     aivika >= 5.2,
-                     aivika-transformers >= 5.2
+                     aivika >= 5.3.1,
+                     aivika-transformers >= 5.3.1
 
     extensions:      MultiParamTypeClasses,
                      FlexibleInstances,
diff --git a/tests/cluster.conf b/tests/cluster.conf
--- a/tests/cluster.conf
+++ b/tests/cluster.conf
@@ -1,13 +1,13 @@
 # The Simulation Cluster Configuration
 
 # 0: the master simulation node, which must be run last
-localhost:8088
+127.0.0.1:8088
 
 # 1: the time server
-localhost:8080
+127.0.0.1:8080
 
 # 2: the first slave simulation node
-localhost:8081
+127.0.0.1:8081
 
 # 3: the second slave simulation node
-localhost:8082
+127.0.0.1:8082