Good morning all, I¹m more of a system administrator supporting software engineers than a software engineer myself, so if my questions seem out of context, please excuse, and hopefully help! I just read on stackoverflow that if we compile with -pthreads, malloc is thread safe on x86 and x86_64 hardware. Is this true??? If so, what version of gcc/g++ is that implemented in? We're using CentOS 5.3_x86-64 and gcc-4.1.2-20080704 and about 90% of our projects are compiled with g++ using -g -O2. Functionally speaking, is there any reason I should upgrade gcc --- other than just to have the latest version? Thanks, -b