Hi, ÃÂ I develope various applications using Cygwin (C++ and Opengl).ÃÂ I do not know if I should be part pf this list, but it looked appropriate.ÃÂ I am now running the same an application that takes about 1min to run under Win2000 and more thanÃÂ 300min(!) under Cygwin.ÃÂ Do I need to tweak something?ÃÂ Thanks for any help. ÃÂ Alejandro Allievi