--- ../../vdr-1.4.5-orig/tools.c	2007-01-02 06:18:41.000000000 +0200
+++ ../../vdr-1.4.5/tools.c	2007-01-02 06:14:03.000000000 +0200
@@ -549,6 +549,54 @@
 
 uint64_t cTimeMs::Now(void)
 {
+#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
+  static bool initialized = false;
+  static bool monotonic = false;
+  struct timespec tp;
+
+  // initialization: 
+  // check if monotonic timer is available and
+  // provides enough accurate resolution  
+  if(!initialized) {
+
+     if(clock_getres(CLOCK_MONOTONIC, &tp)) 
+        esyslog("cTimeMs: clock_getres(CLOCK_MONOTONIC) failed");
+
+     else {
+        dsyslog("cTimeMs: clock_gettime(CLOCK_MONOTONIC): clock resolution %d us",
+		((int)tp.tv_nsec) / 1000);
+
+	// require at least 1 ms resolution
+	if( tp.tv_sec == 0 && tp.tv_nsec <= 1000000 ) {
+
+	   if(clock_gettime(CLOCK_MONOTONIC, &tp))
+	      esyslog("cTimeMs: clock_gettime(CLOCL_MONOTONIC) failed");
+
+	   else {
+	      dsyslog("cTimeMs: using monotonic clock");
+	      monotonic = true;
+	      }
+	   }
+        }
+
+     initialized = true;
+     }
+
+
+  if(monotonic) {
+
+     if(!clock_gettime(CLOCK_MONOTONIC, &tp))
+        return (uint64_t(tp.tv_sec)) * 1000 + tp.tv_nsec / 1000000;
+        
+     esyslog("cTimeMs: clock_gettime(CLOCK_MONOTONIC) failed");
+     monotonic = false;
+     //return 0;
+     }
+
+#else
+#  warning Posix monotonic clock not available
+#endif
+
   struct timeval t;
   if (gettimeofday(&t, NULL) == 0)
      return (uint64_t(t.tv_sec)) * 1000 + t.tv_usec / 1000;