I have been a pc user all the time, although I spend most of time running my PC under linux and now I'm considering to switch. I am also doing some programming using fortran 95 (intel fortran for linux, which is free). As far as I know, under mac os x I can run g95 or gfortran but they are still under heavy development. Does somebody here have any experience in running g95/gfortran and how about it's performance compared to a commercial compiler such as Absoft fortran ? I do really want to swich, but this issue is important to me. Thanks.