What parts of the RTL are NOT thread safe and why? I.e. what should I avoid if I want to create a threaded program with FPC? Well, this may be a too big on to answer, but shoot me ;-) =- ccr/TNSP^pWp ] mhamalai at ratol.fi | http://www.tnsp.org/ ] Show me your "realtime raytracer in Java" ] and I'll show you my CBM 8032, 2 MHz!