I am having a problem that I am not sure where to look for a solution. I install Freeradius via src with the straight 'configure', 'make' and 'make install'. No real problems show up during the install that are obvious so I configure and run the server with a local account. All good and fine still. Next I configure for Kerberos authentication which all works well....IF I am not in debug mode. If I enter debug mode however I always Segfault when the server enters the rlm_krb5 module. Thu Feb 21 11:33:34 2008 : Debug: +- entering group Kerberos Thu Feb 21 11:33:34 2008 : Debug: modsingle[authenticate]: calling krb5 (rlm_krb5) for request 0 Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 182896438976 (LWP 21233)] 0x00000037e4541f29 in krb5_get_init_creds () from /usr/lib64/libkrb5.so.3 (gdb) Quit (gdb) info threads * 1 Thread 182896438976 (LWP 21233) 0x00000037e4541f29 in krb5_get_init_creds () from /usr/lib64/libkrb5.so.3 (gdb) thread apply all bt full Thread 1 (Thread 182896438976 (LWP 21233)): #0 0x00000037e4541f29 in krb5_get_init_creds () from /usr/lib64/libkrb5.so.3 No symbol table info available. #1 0x00000037e454364f in krb5_get_in_tkt_with_password () from /usr/lib64/libkrb5.so.3 No symbol table info available. #2 0x0000002a95bb0491 in krb5_auth (instance=0x6c5f90, request=Variable "request" is not available. ) at rlm_krb5.c:298 r = Variable "r" is not available. The hardware from gromit (where I get this) Linux gromit.umnet.umich.edu 2.6.9-67.0.1.ELsmp #1 SMP Fri Nov 30 11:57:43 EST 2007 x86_64 x86_64 x86_64 GNU/Linux Hardware on other box where it works: Linux engin-test1.ns.itd.umich.edu 2.6.9-1.667 #1 Tue Nov 2 14:41:25 EST 2004 i686 i686 i386 GNU/Linux Running freeradius 2.0.2. I have pointers that this could be anything from Krb libraries, the rlm_krb to autoconf files. I am not sure exactly what I am seeing here or why it is only when running in debug. I have tried using various installs from specifying library for rlm_krb5 to using broad library direction to local system tools. Always comes back with the Secmentation fault with kerberos like the trace listed above. Any help would be great. Thanks. --- Walt Reynolds Principal Systems Security Development Engineer Information Technology Central Services University of Michigan (734) 615-9438