diff --git a/server/authoriz.cpp b/server/authoriz.cpp
index 70843afbd..9bac49d6c 100755
--- a/server/authoriz.cpp
+++ b/server/authoriz.cpp
@@ -36,7 +36,8 @@ public:
   TUserInfo* AddConnection(wxSocketBase& sock, const wxChar* user, int session);
 	TUserInfo* Find(wxSocketBase& sock, const wxChar* user, int session);
 	void RemoveConnection(wxSocketBase& sock, const wxChar* user, int session);
-	void Kill(const wxChar* strUserAtHost);
+	bool Kill(const wxChar* strUserAtHost);
+  bool Kill(TUserInfo* ui);
   void KillSession(wxSocketBase& sock, int session);
 
 	size_t GetCount() const { return size(); } 
@@ -86,45 +87,54 @@ TUserInfo* TUserTable::Find(wxSocketBase& sock, const wxChar* user, int session)
     return (*this)[strUserAtHost];
 
   const wxString strHost = strUserAtHost.After('@');
-  for( TUsersHashMap::iterator it = begin(); it != end(); ++it )
+  for (TUsersHashMap::iterator it = begin(); it != end(); ++it)
   {
     TUserInfo* ui = it->second;
-		if (ui->m_strHost == strHost)
+		if (ui != NULL && ui->m_strHost == strHost)
 			return ui;
 	}
 
 	return NULL;
 }
 
+bool TUserTable::Kill(const wxChar* strUserAtHost)
+{
+  const int erased = erase(strUserAtHost);
+  return erased != 0;
+}
+
+bool TUserTable::Kill(TUserInfo* ui)
+{
+  for (TUsersHashMap::iterator it = begin(); it != end(); ++it)
+  {
+    if (it->second == ui)
+    {
+      erase(it);
+      return true;
+    }
+  }
+  return false;
+}
+
+
 void TUserTable::RemoveConnection(wxSocketBase& sock, const wxChar* user, int session)
 {
 	TUserInfo* ui = Find(sock, user, session);
-	if (ui)
+	if (ui != NULL)
 	{
 		ui->m_nPrograms--;
 		if (ui->m_nPrograms <= 0)
-    {
-      const wxString strUserAtHost = BuildKey(sock, user, session);
-		  erase(strUserAtHost);
-    }
+		  Kill(ui);
 	}
 }
 
-void TUserTable::Kill(const wxChar* strUserAtHost)
-{
-  erase(strUserAtHost);
-}
-
 void TUserTable::KillSession(wxSocketBase& sock, int session)
 {
   while (true)
   {
 	  TUserInfo* ui = Find(sock, NULL, session);
 		if (ui != NULL)
-    {
-      const wxString strUserAtHost = BuildKey(sock, ui->m_strName.c_str(), session);
-		  erase(strUserAtHost);
-    }
+      Kill(ui);
     else
 			break;
 	}
@@ -343,22 +353,25 @@ void TAuthorizationServer::GenerateIndex(wxString& strFilename)
   	TXmlItem& tr = title.AddChild("table").SetAttr("width", "40%").AddChild("tr");
 		
 		TXmlItem& td = tr.AddChild("td").SetAttr("width", "30%");
-		const bool hard = m_Dongle.hardware() == _dongle_hardlock;
 		TXmlItem& img = td.AddChild("img");
+    wxString strModel;
     switch (m_Dongle.hardware())
     {
-    case _dongle_aladdin:
-      img.SetAttr("src", "aladdin.gif");
+    case _dongle_xsec:
+      img.SetAttr("src", "xsec.gif");
+      strModel = wxT("XSec");
       break;
     case _dongle_hardlock:
       img.SetAttr("src", "hardlock.gif");
+      strModel = wxT("Hardlock");
       break;
     default:
       img.SetAttr("src", "eutron.gif");
+      strModel = wxT("Eutron");
       break;
     }
 		
-		tr.AddChild("td").SetAttr("align", "center").AddChild("h1") << (hard ? "Hardlock EYE" : "Eutron Smartkey");
+		tr.AddChild("td").SetAttr("align", "center").AddChild("h1") << strModel;
 	}
 	else
 	{
@@ -494,20 +507,23 @@ void TAuthorizationServer::GenerateUsers(wxString& strFilename)
 	th.AddChild("th").SetAttr("width", "15%") << "Kill";
 
 	int nUser = 0;
-	for( TUsersHashMap::const_iterator it = m_Users.begin(); it != m_Users.end(); ++it )
+	for (TUsersHashMap::const_iterator it = m_Users.begin(); it != m_Users.end(); ++it )
 	{
     const TUserInfo* ui = it->second;
-    TXmlItem& tr = table.AddChild("tr");
-		tr.AddChild("td").SetAttr("align", "right") << wxString::Format("%d", ++nUser);
-    tr.AddChild("td").AddChild("b") << ui->m_strName;
-    tr.AddChild("td") << ui->m_strHost;
-    tr.AddChild("td").SetAttr("align", "right") << wxString::Format("%u", ui->m_nPrograms);
-    tr.AddChild("td").SetAttr("align", "center") << ui->m_time.Format("%H:%M:%S");
-    tr.AddChild("td").SetAttr("align", "center") << ui->m_time.Format("%d-%m-%Y");
+    if (ui != NULL)
+    {
+      TXmlItem& tr = table.AddChild("tr");
+		  tr.AddChild("td").SetAttr("align", "right") << wxString::Format("%d", ++nUser);
+      tr.AddChild("td").AddChild("b") << ui->m_strName;
+      tr.AddChild("td") << ui->m_strHost;
+      tr.AddChild("td").SetAttr("align", "right") << wxString::Format("%u", ui->m_nPrograms);
+      tr.AddChild("td").SetAttr("align", "center") << ui->m_time.Format("%H:%M:%S");
+      tr.AddChild("td").SetAttr("align", "center") << ui->m_time.Format("%d-%m-%Y");
 
-    wxString strKey; strKey << ui->m_strName << wxT("@") << ui->m_strHost;
-    wxString href = wxString::Format("kill.cgi?%s", strKey.c_str());
-    AddLinkButton(tr.AddChild("td"), "Kill", href).SetAttr("width", "100%");
+      wxString strKey; strKey << ui->m_strName << wxT("@") << ui->m_strHost;
+      wxString href = wxString::Format("kill.cgi?%s", strKey.c_str());
+      AddLinkButton(tr.AddChild("td"), "Kill", href).SetAttr("width", "100%");
+    }
 	}
 
 	body.AddChild("br");
@@ -986,8 +1002,9 @@ bool TAuthorizationServer::ProcessCommand(wxString cmd, wxSocketBase& outs)
 	
   if (cmd.StartsWith("UserLogout"))
 	{
-		bool ok = ProcessUserLogout(cmd, outs);
-		return ReturnBool(outs, ok);
+		ReturnBool(outs, true);       // ATTENZIONE! Prima rispondo ok ...
+    ProcessUserLogout(cmd, outs); // ... poi chiudo la connessione
+		return true;
 	}
 
   if (cmd.StartsWith("DongleInfo"))
diff --git a/server/dongle.h b/server/dongle.h
index 0e87ce380..35a12a4cc 100755
--- a/server/dongle.h
+++ b/server/dongle.h
@@ -5,8 +5,8 @@
 #include <wx/datetime.h>
 #endif
 
-enum TDongleHardware { _dongle_unknown, _dongle_hardlock, _dongle_eutron, _dongle_aladdin };
-enum TDongleType { _no_dongle, _user_dongle, _developer_dongle, _aga_dongle, _prassi_dongle, _procom_dongle };
+enum TDongleHardware { _dongle_unknown, _dongle_hardlock, _dongle_eutron, _dongle_xsec };
+enum TDongleType { _no_dongle, _user_dongle, _developer_dongle, _aga_dongle, _prassi_dongle };
 enum { MAX_DONGLE_ASSIST = 8 };
 
 class TBit_array : public wxObject