i have tried running the centos 4 & 6 versions of freesurfer on ubuntu 12.04, and with either i am getting a memory error when i simply run mri_info on an mgz file (this does not happen on my osx machine for the same file , and the license file is fine):

""" znzTAGskip: tag=1667787808, failed to calloc 606085120 bytes!

Cannot allocate memory """

any help would be appreciated.

cheers, @rno