I've encountered probably similar problem on squeeze 0.2.3-12 for another file: http://www.seismo.ethz.ch/gshap/global/gshapfin.ps.gz In xsession-errors it shows: ** thunar-vfs:ERROR:thunar-vfs-path.c:1201:_thunar_vfs_path_shutdown: assertion failed: (home_components[n]->ref_count == 1) Debian Testing