Since people here have been pondering about this issue lately: the design document <http://www.sgi.com/Technology/STL/thread_safety.html> applies to GCC's templates as well. IIUC this looks rather sound, the worst thing thus being our refcounting. How do I do a portable spin-lock? Regards -rbk. -- Richard Kreckel <Richard.Kreckel@Uni-Mainz.DE> <http://wwwthep.physik.uni-mainz.de/~kreckel/>