the site it's looking for is http://fsl.fmrib.ox.ac.uk/fsldownloads/. at least it's the url attributed to main_site in the install file (fsl_installer.py)
the version is Linux version 3.6.10-2.fc16.x86_64 ([log in to unmask]) (gcc version 4.6.3 20120306 (Red Hat 4.6.3-2) (GCC) )