Maybe it's useful to someone:
#0 0x4003e6a1 in ?? () from /lib/libc.so.6
(gdb) where
#0 0x4003e6a1 in ?? () from /lib/libc.so.6
#1 0x4003f6df in ?? () from /lib/libc.so.6
#2 0x8059ce9 in ncExit (code=1) at nntpcache.c:387
#3 0x8059626 in sigsegv (sig=11) at nntpcache.c:209
#4 0xbfff80e4 in ?? ()
#5 0x4005de70 in ?? () from /lib/libc.so.6
#6 0x4005b91b in ?? () from /lib/libc.so.6
#7 0x805d9e5 in attachServer (scfg=0x81b9b90) at sockets.c:147
#8 0x805ec75 in Cfemitf (scfg=0x81b9b90, fmt=0x8069b6d "list %s\r\n")
at sockets.c:594
#9 0x805687b in fetch_list (scfg=0x81b9b90, list=0x806e8d8) at list.c:409
#10 0x8057131 in updateDaemon (force=0) at list.c:698
#11 0x805becb in master_loop () at nntpcache.c:1159
#12 0x805c9f9 in main (argc=1, argv=0xbffffd04, envp=0xbffffd0c)
at nntpcache.c:1435
more data on request (well, don't take too long, a 18 MB core file
is not something you would like to keep forever).
This is on Linux/RedHat 5.1 i386
