Hi, Are a setf on a simple variable, and a setf on a property list (i.e., a (setf getf)), thread-safe (atomic) operations in OpenMCL? Thanks, Pascal -- Pascal Costanza, mailto:pc at p-cos.net, http://p-cos.net Vrije Universiteit Brussel, Programming Technology Lab Pleinlaan 2, B-1050 Brussel, Belgium