Neat. Hadn't noticed this before. Here is a trace (produced by 'ulimit -c 10000; su - tbl'): (gdb) where #0 0x007642b1 in malloc_consolidate () from /lib/libc.so.6 #1 0x00765606 in _int_malloc () from /lib/libc.so.6 #2 0x00766a49 in calloc () from /lib/libc.so.6 #3 0x00fd3ece in _dl_new_object () from /lib/ld-linux.so.2 #4 0x00fcf288 in _dl_map_object_from_fd () from /lib/ld-linux.so.2 #5 0x00fd1fa5 in _dl_map_object () from /lib/ld-linux.so.2 #6 0x00fdad34 in dl_open_worker () from /lib/ld-linux.so.2 #7 0x00fd775e in _dl_catch_error () from /lib/ld-linux.so.2 #8 0x00fdb489 in _dl_open () from /lib/ld-linux.so.2 #9 0x0028cd42 in dlopen_doit () from /lib/libdl.so.2 #10 0x00fd775e in _dl_catch_error () from /lib/ld-linux.so.2 #11 0x0028d3f0 in _dlerror_run () from /lib/libdl.so.2 #12 0x0028cdd2 in dlopen@@GLIBC_2.1 () from /lib/libdl.so.2 #13 0x0065f2f3 in _pam_start_handlers () from /lib/libpam.so.0 #14 0x0065f605 in _pam_init_handlers () from /lib/libpam.so.0 #15 0x0065d61f in pam_start () from /lib/libpam.so.0 #16 0x00e6779f in main () from /bin/su (gdb) tom -- Tom London -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx http://www.redhat.com/mailman/listinfo/fedora-devel-list