diff -Naur org/include/RCF/RcfSession.hpp mod/include/RCF/RcfSession.hpp
--- org/include/RCF/RcfSession.hpp	2013-05-09 10:31:05.000000000 +0200
+++ mod/include/RCF/RcfSession.hpp	2014-10-19 17:41:32.000000000 +0200
@@ -25,6 +25,7 @@
 #include <boost/enable_shared_from_this.hpp>
 #include <boost/function.hpp>
 #include <boost/shared_ptr.hpp>
+#include <boost/optional.hpp>
 
 #include <RCF/Filter.hpp>
 #include <RCF/Export.hpp>
@@ -282,7 +283,7 @@
         boost::uint32_t getPingIntervalMs();
         void            setPingIntervalMs(boost::uint32_t pingIntervalMs);
 
-        boost::uint32_t getTouchTimestamp();
+        boost::optional<boost::uint32_t> getTouchTimestamp();
 
         void            touch();
 
@@ -395,7 +396,7 @@
         bool                                    mCloseSessionAfterWrite;
         boost::uint32_t                         mPingTimestamp;
         boost::uint32_t                         mPingIntervalMs;
-        boost::uint32_t                         mTouchTimestamp;
+        boost::optional<boost::uint32_t>        mTouchTimestamp;
         ByteBuffer                              mPingBackByteBuffer;
         PingBackTimerEntry                      mPingBackTimerEntry;
 
diff -Naur org/src/RCF/RcfSession.cpp mod/src/RCF/RcfSession.cpp
--- org/src/RCF/RcfSession.cpp	2013-05-13 10:31:06.000000000 +0200
+++ mod/src/RCF/RcfSession.cpp	2014-10-19 17:56:56.000000000 +0200
@@ -58,7 +58,7 @@
         mCloseSessionAfterWrite(),
         mPingTimestamp(),
         mPingIntervalMs(),
-        mTouchTimestamp(0),
+        mTouchTimestamp(),
         mWritingPingBack(false),
         mpParameters(),
         mParmsVec(1+15), // return value + max 15 arguments
@@ -175,6 +175,9 @@
         SessionStatePtr sessionStatePtr = getSessionState().shared_from_this();
         sessionStatePtr->setEnableReconnect(false);
         sessionStatePtr->postClose();
+
+        Lock lock(mMutex);
+        mTouchTimestamp = boost::none;
     }
 
     bool RcfSession::hasDefaultServerStub()
@@ -327,7 +330,7 @@
         mPingIntervalMs = pingIntervalMs;
     }
 
-    boost::uint32_t RcfSession::getTouchTimestamp()
+    boost::optional<boost::uint32_t> RcfSession::getTouchTimestamp()
     {
         Lock lock(mMutex);
         return mTouchTimestamp;
diff -Naur org/src/RCF/SessionTimeoutService.cpp mod/src/RCF/SessionTimeoutService.cpp
--- org/src/RCF/SessionTimeoutService.cpp	2013-04-11 10:31:15.000000000 +0200
+++ mod/src/RCF/SessionTimeoutService.cpp	2014-10-19 17:43:15.000000000 +0200
@@ -75,10 +75,10 @@
                 RcfSessionPtr rcfSessionPtr = sessionStatePtr->getSessionPtr();
                 if (rcfSessionPtr)
                 {
-                    boost::uint32_t lastTouched = rcfSessionPtr->getTouchTimestamp();
+                    boost::optional<boost::uint32_t> const lastTouched = rcfSessionPtr->getTouchTimestamp();
                     if (lastTouched)
                     {
-                        RCF::Timer lastTouchedTimer( lastTouched );
+                        RCF::Timer lastTouchedTimer( *lastTouched );
                         if (lastTouchedTimer.elapsed(mSessionTimeoutMs))
                         {
                             rcfSessionPtr->disconnect();