seems like my problem wasn;t that complicated :)
i had installed gfortran 4.3 while gcc was 4.2.3.....gcc was working but without gfortran. after uninstalling gfortran 4.3 and installing gfortran 4.2.3 it worked perfectly :)
i mean, well, at least it says about the fortran compiler when i tell him ¨gfortran --version¨ :)