diff --git a/mcfw/src_linux/links/system/system_common.c b/mcfw/src_linux/links/system/system_common.c
index 1870f8f..39a1f0b 100755
--- a/mcfw/src_linux/links/system/system_common.c
+++ b/mcfw/src_linux/links/system/system_common.c
@@ -66,6 +66,9 @@ Int32 System_init()
 
     memset(&gSystem_objCommon, 0, sizeof(gSystem_objCommon));
     
+    status = OSA_mutexCreate(&gSystem_objCommon.linkControlMutex);
+    UTILS_assert(status==OSA_SOK);
+
     System_ipcInit();
 
     IpcBitsInLink_init();
@@ -89,6 +92,8 @@ Int32 System_init()
 
 Int32 System_deInit()
 {
+    Int32         status;
+
     #ifdef SYSTEM_DEBUG
     printf ( " %u: SYSTEM: System Common De-Init in progress !!!\n", OSA_getCurTimeInMsec());
     #endif
@@ -105,6 +110,9 @@ Int32 System_deInit()
 
     OSA_mbxDelete(&gSystem_objCommon.mbx);
 
+    status = OSA_mutexDelete(&gSystem_objCommon.linkControlMutex);
+    UTILS_assert(status==OSA_SOK);
+
     #ifdef SYSTEM_DEBUG
     printf ( " %u: SYSTEM: System Common De-Init Done !!!\n", OSA_getCurTimeInMsec());
     #endif
diff --git a/mcfw/src_linux/links/system/system_linkApi_local.c b/mcfw/src_linux/links/system/system_linkApi_local.c
index bda4c57..2b212df 100755
--- a/mcfw/src_linux/links/system/system_linkApi_local.c
+++ b/mcfw/src_linux/links/system/system_linkApi_local.c
@@ -17,6 +17,8 @@ Int32 System_linkControl_local(UInt32 linkId, UInt32 cmd, Void *pPrm, UInt32 prm
 
     UTILS_assert(  linkId < SYSTEM_LINK_ID_MAX);

+    if (waitAck)
+    {
+        OSA_mutexLock(&gSystem_objCommon.linkControlMutex);
+
+    }
     pToMbx = &gSystem_objCommon.linkObj[linkId].pTsk->mbxHndl;
 
     if(waitAck)
@@ -24,6 +26,7 @@ Int32 System_linkControl_local(UInt32 linkId, UInt32 cmd, Void *pPrm, UInt32 prm
 
     status = OSA_mbxSendMsg(pToMbx,&gSystem_objCommon.mbx,  cmd, pPrm, flags);

+    if (waitAck)
+    {
+        OSA_mutexUnlock(&gSystem_objCommon.linkControlMutex);
+
+    }

     return status;
 }
 
diff --git a/mcfw/src_linux/links/system/system_priv_common.h b/mcfw/src_linux/links/system/system_priv_common.h
index a367f48..a0c7435 100755
--- a/mcfw/src_linux/links/system/system_priv_common.h
+++ b/mcfw/src_linux/links/system/system_priv_common.h
@@ -53,6 +53,7 @@ typedef struct
  */
 typedef struct
 {
+    OSA_MutexHndl           linkControlMutex;
     OSA_MbxHndl             mbx;
     System_LinkObj          linkObj[SYSTEM_LINK_ID_MAX];
 
diff --git a/mcfw/src_linux/osa/src/osa_mbx.c b/mcfw/src_linux/osa/src/osa_mbx.c
index c7e2384..2cc5083 100755
--- a/mcfw/src_linux/osa/src/osa_mbx.c
+++ b/mcfw/src_linux/osa/src/osa_mbx.c
@@ -73,6 +73,10 @@ int OSA_mbxSendMsg(OSA_MbxHndl *pMbxTo, OSA_MbxHndl *pMbxFrom, Uint32 cmd, void
         waitAck = FALSE;
         retVal  = OSA_msgGetAckStatus(pRcvMsg);
       }
+      else {
+          OSA_printf("OSA_MBX:MSG RECEIVED OUT OF ORDER.SERIOUS ERROR!!! Expected[%d]:Received[%d]",pSentMsg->cmd,pRcvMsg->cmd);
+          OSA_assert(FALSE);
+      }
 
       OSA_mbxFreeMsg(pRcvMsg);