Index: Modules/posixmodule.c
===================================================================
--- Modules/posixmodule.c	(revision 60972)
+++ Modules/posixmodule.c	(working copy)
@@ -5922,9 +5922,6 @@
 
 
 #ifdef HAVE_TIMES
-#ifndef HZ
-#define HZ 60 /* Universal constant :-) */
-#endif /* HZ */
 
 #if defined(PYCC_VACPP) && defined(PYOS_OS2)
 static long
@@ -5944,28 +5941,42 @@
 {
     /* Currently Only Uptime is Provided -- Others Later */
 	return Py_BuildValue("ddddd",
-			     (double)0 /* t.tms_utime / HZ */,
-			     (double)0 /* t.tms_stime / HZ */,
-			     (double)0 /* t.tms_cutime / HZ */,
-			     (double)0 /* t.tms_cstime / HZ */,
+			     (double)0 /* t.tms_utime / ticks_per_sec */,
+			     (double)0 /* t.tms_stime / ticks_per_sec */,
+			     (double)0 /* t.tms_cutime / ticks_per_sec */,
+			     (double)0 /* t.tms_cstime / ticks_per_sec */,
 			     (double)system_uptime() / 1000);
 }
 #else /* not OS2 */
 static PyObject *
 posix_times(PyObject *self, PyObject *noargs)
 {
+#ifdef HAVE_SYSCONF
+	clock_t ticks_per_sec = sysconf(_SC_CLK_TCK);
+#else
+#ifdef HZ
+	clock_t ticks_per_sec = HZ;
+#else
+	clock_t ticks_per_sec = NULL;
+#endif
+#endif
 	struct tms t;
 	clock_t c;
 	errno = 0;
+	if (ticks_per_sec == NULL) {
+		PyErr_SetString(PyExc_EnvironmentError,
+				"Clock information is not available for this platform");
+	        return NULL;
+	}
 	c = times(&t);
 	if (c == (clock_t) -1)
 		return posix_error();
 	return Py_BuildValue("ddddd",
-			     (double)t.tms_utime / HZ,
-			     (double)t.tms_stime / HZ,
-			     (double)t.tms_cutime / HZ,
-			     (double)t.tms_cstime / HZ,
-			     (double)c / HZ);
+			     (double)t.tms_utime / ticks_per_sec,
+			     (double)t.tms_stime / ticks_per_sec,
+			     (double)t.tms_cutime / ticks_per_sec,
+			     (double)t.tms_cstime / ticks_per_sec,
+			     (double)c / ticks_per_sec);
 }
 #endif /* not OS2 */
 #endif /* HAVE_TIMES */