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diff --git a/ETL/tags/stable/ETL/_clock_base.h b/ETL/tags/stable/ETL/_clock_base.h
deleted file mode 100644
index 32d8742..0000000
--- a/ETL/tags/stable/ETL/_clock_base.h
+++ /dev/null
@@ -1,133 +0,0 @@
-/*! ========================================================================
-** Extended Template and Library
-** Clock Abstraction Implementation
-** $Id$
-**
-** Copyright (c) 2002 Robert B. Quattlebaum Jr.
-**
-** This package is free software; you can redistribute it and/or
-** modify it under the terms of the GNU General Public License as
-** published by the Free Software Foundation; either version 2 of
-** the License, or (at your option) any later version.
-**
-** This package is distributed in the hope that it will be useful,
-** but WITHOUT ANY WARRANTY; without even the implied warranty of
-** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-** General Public License for more details.
-**
-** === N O T E S ===========================================================
-**
-** This is an internal header file, included by other ETL headers.
-** You should not attempt to use it directly.
-**
-** ========================================================================= */
-
-/* === S T A R T =========================================================== */
-
-#ifndef __ETL__CLOCK_H
-#define __ETL__CLOCK_H
-
-/* === H E A D E R S ======================================================= */
-
-#ifndef WIN32
-#include <unistd.h>
-#else
-inline void sleep(int i) { Sleep(i*1000); }
-#endif
-
-/* === M A C R O S ========================================================= */
-
-/* === T Y P E D E F S ===================================================== */
-
-/* === C L A S S E S & S T R U C T S ======================================= */
-
-_ETL_BEGIN_NAMESPACE
-
-inline void yield() { sleep(0); }
-
-/*! ========================================================================
-** \class	clock_base
-** \brief	clock abstraction
-**
-** A more detailed description needs to be written.
-*/
-template <class DESC>
-class clock_base : public DESC
-{
-public:
-	typedef typename DESC::value_type value_type;
-
-private:
-	typedef clock_base<DESC> _clock;
-	typedef typename DESC::timestamp timestamp;
-
-	timestamp base_time;
-
-	using DESC::get_current_time;
-	using DESC::realtime;
-	using DESC::one_second;
-public:
-
-	clock_base() { reset(); }
-
-	void reset()
-	{ get_current_time(base_time); }
-
-	value_type operator()()const
-	{ return timestamp_to_seconds(get_current_time()-base_time); }
-
-	value_type pop_time()
-	{
-		// Grab the old base time
-		timestamp old_time=base_time;
-
-		// Put the current time into base_time
-		get_current_time(base_time);
-
-		return timestamp_to_seconds(base_time-old_time);
-	}
-
-	static void
-	sleep(const value_type &length)
-	{
-		if(!realtime())
-			::sleep((int)(length+0.5));
-		else
-		{
-			_clock timer;
-			timer.reset();
-			value_type val;
-			for(val=timer();one_second()<length-val;val=timer())
-				::sleep((int)((length-val)/2.0+0.4));
-			while(timer()<length)
-			  ;
-		}
-
-
-		/* This is a different waiting mechanism that uses
-		** the native timestamp type of the clock rather
-		** than converting it to a double (or whatever).
-		** You would think that this would be at least a
-		** few microseconds faster, but a few tests on my
-		** PowerBook G4 have proved otherwise. Indeed I loose
-		** several microseconds using this "optimized" method.
-		** Bizarre.
-		**	- darco (8-17-2002)
-		{
-			timestamp endtime=get_current_time()+seconds_to_timestamp(length);
-			timestamp loopendtime=get_current_time()+seconds_to_timestamp(length-1.0);
-			while(get_current_time()<loopendtime)
-				::sleep((int)timestamp_to_seconds(loopendtime-get_current_time())/2.0);
-			while(get_current_time()<endtime);
-		}
-		*/
-
-		return;
-	}
-};
-
-_ETL_END_NAMESPACE
-
-/* === E N D =============================================================== */
-
-#endif