Index: t3lib/class.t3lib_timetracknull.php
===================================================================
--- t3lib/class.t3lib_timetracknull.php	(revision 6604)
+++ t3lib/class.t3lib_timetracknull.php	(working copy)
@@ -129,10 +129,16 @@
 	 * @param	float		$microtime: The microtime value - if not set the current time is used
 	 * @return	integer		The microtime value as milliseconds value
 	 */
-	public function getMilliseconds($microtime = NULL) {}
+	public function getMilliseconds($microtime = NULL) {
+		if (!isset($microtime)) {
+			$microtime = microtime(true);
+		}
+		return round($microtime * 1000);
+	}
 
 }
 
 // XCLASSing is not possible for this class
 
-?>
\ No newline at end of file
+?>