diff --git a/src/proc/mobject/session.hpp b/src/proc/mobject/session.hpp
index d49a7397b..987d2503b 100644
--- a/src/proc/mobject/session.hpp
+++ b/src/proc/mobject/session.hpp
@@ -97,6 +97,7 @@ namespace mobject {
 
     public:
       static session::SessManager& current;
+      static bool initFlag;                     ///////////////TICKET #518  yet another hack; actually need to care for session manager startup.
       session::DefsManager& defaults;           ///////////////TODO this is a hack... better solve it based on the new SessionServices mechanism
       
       virtual bool isValid ()              = 0;
diff --git a/src/proc/mobject/session/sess-manager-impl.cpp b/src/proc/mobject/session/sess-manager-impl.cpp
index 879802c94..ffaedf750 100644
--- a/src/proc/mobject/session/sess-manager-impl.cpp
+++ b/src/proc/mobject/session/sess-manager-impl.cpp
@@ -88,7 +88,9 @@ namespace session {
    */
   SessManagerImpl::SessManagerImpl ()  throw()
     : pImpl_ (0)
-  { }
+  {
+    Session::initFlag = true;  //////////////////////////////////////// TICKET #518   instead of this hack, implement basic-init of the session manager for real
+  }
   
   
   
diff --git a/src/proc/mobject/session/session-services.cpp b/src/proc/mobject/session/session-services.cpp
index c5ad42a32..ba6fc861c 100644
--- a/src/proc/mobject/session/session-services.cpp
+++ b/src/proc/mobject/session/session-services.cpp
@@ -44,7 +44,8 @@ namespace session {
   bool
   SessionServiceFetch::isAccessible ()
   {
-    return Session::current.isUp();
+    return Session::initFlag
+        && Session::current.isUp();
   }
   
   /** verify the given placement-ID (hash) is valid,
diff --git a/src/proc/mobject/session/session.cpp b/src/proc/mobject/session/session.cpp
index f5513574a..3c344a2e7 100644
--- a/src/proc/mobject/session/session.cpp
+++ b/src/proc/mobject/session/session.cpp
@@ -48,6 +48,13 @@ using mobject::session::SessionImplAPI;
 
 namespace mobject {
   
+  
+  /** temporary fix for init problems
+   *  @todo really solve the basic init of session manager TICKET #518
+   */
+  bool Session::initFlag = false;
+  
+  
   /** the sole access point for all client code to the system-wide
    *  "current session". Implemented as smart pointer to singleton
    *  implementation object, where the smart pointer is actually