Hi, that still doesn't fix it; the SEGV is now at a different place though: Ready to process requests. Program received signal SIGTERM, Terminated. 0x00007ffff6608623 in select () from /lib64/libc.so.6 (gdb) bt #0 0x00007ffff6608623 in select () from /lib64/libc.so.6 #1 0x00007ffff7bca538 in fr_event_loop (el=0x8896c0) at event.c:391 #2 0x0000000000429f21 in radius_event_process () at event.c:3800 #3 0x0000000000409f7c in main (argc=<optimized out>, argv=<optimized out>) at radiusd.c:421 (gdb) c Continuing. Ready to process requests. Signalled to terminate Exiting normally. Program received signal SIGSEGV, Segmentation fault. 0x00007ffff65a5634 in free () from /lib64/libc.so.6 (gdb) bt #0 0x00007ffff65a5634 in free () from /lib64/libc.so.6 #1 0x000000000040e2c0 in cf_section_parse_free (cs=0x6797d0, base=0x87f710) at conffile.c:344 #2 0x000000000041ad11 in module_instance_free (data=0x87f5d0) at modules.c:382 #3 0x00007ffff7bc3dfd in FreeWalker (tree=0x7f8130, X=0x87dc90) at rbtree.c:63 #4 0x00007ffff7bc3dee in FreeWalker (tree=0x7f8130, X=0x83f2f0) at rbtree.c:61 #5 0x00007ffff7bc3ddd in FreeWalker (tree=0x7f8130, X=0x82ff30) at rbtree.c:60 #6 0x00007ffff7bc3ddd in FreeWalker (tree=0x7f8130, X=0x884640) at rbtree.c:60 #7 0x00007ffff7bc3ddd in FreeWalker (tree=0x7f8130, X=0x833850) at rbtree.c:60 #8 0x00007ffff7bc3dee in FreeWalker (tree=0x7f8130, X=0x822e20) at rbtree.c:61 #9 0x00007ffff7bc418d in rbtree_free (tree=0x7f8130) at rbtree.c:74 #10 0x000000000041bc40 in detach_modules () at modules.c:441 #11 0x0000000000409fd4 in main (argc=<optimized out>, argv=<optimized out>) at radiusd.c:465 (gdb) Doesn't tell *which* module instance is the bad one though. If it's needed, I could try to zero in by selectively not loading modules... Stefan -- Stefan WINTER Ingenieur de Recherche Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et de la Recherche 6, rue Richard Coudenhove-Kalergi L-1359 Luxembourg Tel: +352 424409 1 Fax: +352 422473