Due to the fact that I was tired of adding site.cfg to scipy and numpy when building on Fedora and Ubuntu systems as well as a scipy ticket (http://scipy.org/scipy/numpy/ticket/985), I decided to try and add default system paths to numpy.distutils. You can find out more details on this ticket: http://projects.scipy.org/scipy/scipy/ticket/817 I would like to have as many people test this as possible. So I would like everyone, who has had to build numpy/scipy with a site.cfg despite having installed all the dependencies in the system default locations, to test this. If you would please update to the numpy trunk and build numpy and scipy without your old site.cfg. Regardless of whether it works or not, I would appreciate it if you could let me know. Thanks, Jarrod