Index: source/network/NetServer.cpp
===================================================================
--- source/network/NetServer.cpp    (revision 18113)
+++ source/network/NetServer.cpp    (working copy)
@@ -598,11 +598,14 @@ void CNetServerWorker::CheckClientConnec

        // Send to all clients except the affected one
        // (since that will show the locally triggered warning instead)
        if (message)
            for (size_t j = 0; j < m_Sessions.size(); ++j)
-               if (i != j)
+               if (i != j && (
+                   m_Sessions[j]->GetCurrState() == NSS_PREGAME ||
+                   m_Sessions[j]->GetCurrState() == NSS_INGAME)
+               )
                    m_Sessions[j]->SendMessage(message);

        SAFE_DELETE(message);
    }
 }