I'll note that the xutils 4.0.2-1 mkfontdir also segv's on Debian/SPARC using 2.2.18pre21 (kernel-image-2.2.18pre21-sun4cdm) so maybe it really is an "all the world is an x86" bug :-)
Setting up xfonts-base (4.0.2-1) ... Running mkfontdir in misc font directory.../var/lib/dpkg/info/xfonts-base.postinst: line 58: 24276 Segmentation fault $currentcmd $longdir dpkg: error processing xfonts-base (--configure): subprocess post-installation script returned error exit status 139 I'll poke at it with gdb... Hmm: % gdb /usr/bin/X11/mkfontdir (no debugging symbols found)... (gdb) run /usr/lib/X11/fonts/75dpi Program received signal SIGSEGV, Segmentation fault. 0x0 in ?? () (gdb) where #0 0x0 in ?? () #1 0x5006f9ec in _init () from /usr/lib/libz.so.1 #2 0x5006f99c in _init () from /usr/lib/libz.so.1 #3 0x500102c8 in _dl_init () at dl-init.c:136 #4 0x500032b4 in _dl_start_user () at rtld.c:147 That would at least explain why it it faulted just as quickly as a user as it did as root... (*type type* yep, same trace when run as root.) libz.so is from from zlib1g 1:1.1.3-12, if that helps. gzip and gunzip work though. Not up to doing an X build tonight, but if noone gets anywhere in the next day or two I'll poke at it...