Hello, I am getting such an error when i try to run perl. symbol lookup error: /usr/lib/perl5/auto/DBI/DBI.so: undefined symbol: Perl_Tstack_sp_ptr Where should i check for debugging this error? What might be the possible reasons for that ? freeradius -X Starting - reading configuration files ... reread_config: reading radiusd.conf Config: including file: /etc/freeradius/proxy.conf Config: including file: /etc/freeradius/clients.conf Config: including file: /etc/freeradius/snmp.conf Config: including file: /etc/freeradius/eap.conf Config: including file: /etc/freeradius/sql.conf main: prefix = "/usr" main: localstatedir = "/var" main: logdir = "/var/log/freeradius" main: libdir = "/usr/lib/freeradius" main: radacctdir = "/var/log/freeradius/radacct" main: hostname_lookups = no main: max_request_time = 30 main: cleanup_delay = 5 main: max_requests = 1024 main: delete_blocked_requests = 0 main: port = 0 main: allow_core_dumps = no main: log_stripped_names = no main: log_file = "/var/log/freeradius/radius.log" main: log_auth = no main: log_auth_badpass = no main: log_auth_goodpass = no main: pidfile = "/var/run/freeradius/freeradius.pid" main: user = "freerad" main: group = "freerad" main: usercollide = no main: lower_user = "no" main: lower_pass = "no" main: nospace_user = "no" main: nospace_pass = "no" main: checkrad = "/usr/sbin/checkrad" main: proxy_requests = yes proxy: retry_delay = 5 proxy: retry_count = 3 proxy: synchronous = no proxy: default_fallback = yes proxy: dead_time = 120 proxy: post_proxy_authorize = no proxy: wake_all_if_all_dead = no security: max_attributes = 200 security: reject_delay = 1 security: status_server = no main: debug_level = 0 read_config_files: reading dictionary read_config_files: reading naslist Using deprecated naslist file. Support for this will go away soon. read_config_files: reading clients read_config_files: reading realms radiusd: entering modules setup Module: Library search path is /usr/lib/freeradius Module: Loaded exec exec: wait = yes exec: program = "(null)" exec: input_pairs = "request" exec: output_pairs = "(null)" exec: packet_type = "(null)" rlm_exec: Wait=yes but no output defined. Did you mean output=none? Module: Instantiated exec (exec) Module: Loaded expr Module: Instantiated expr (expr) Module: Loaded PAP pap: encryption_scheme = "crypt" Module: Instantiated pap (pap) Module: Loaded CHAP Module: Instantiated chap (chap) Module: Loaded MS-CHAP mschap: use_mppe = yes mschap: require_encryption = no mschap: require_strong = no mschap: with_ntdomain_hack = no mschap: passwd = "(null)" mschap: ntlm_auth = "(null)" Module: Instantiated mschap (mschap) Module: Loaded perl perl: module = "/usr/local/bin/login.pl" perl: func_authorize = "authorize" perl: func_authenticate = "authenticate" perl: func_accounting = "accounting" perl: func_preacct = "preacct" perl: func_checksimul = "checksimul" perl: func_detach = "detach" perl: func_xlat = "xlat" perl: func_pre_proxy = "pre_proxy" perl: func_post_proxy = "post_proxy" perl: func_post_auth = "post_auth" perl: perl_flags = "(null)" perl: func_start_accounting = "(null)" perl: func_stop_accounting = "(null)" freeradius: symbol lookup error: /usr/lib/perl5/auto/DBI/DBI.so: undefined symbol: Perl_Tstack_sp_ptr ------------------- freeradius -v freeradius: FreeRADIUS Version 1.1.3, for host x86_64-pc-linux-gnu, built on Dec 17 2006 at 01:07:30 Copyright (C) 2000-2006 The FreeRADIUS server project. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You may redistribute copies of FreeRADIUS under the terms of the GNU General Public License. For more information about these matters, see the file named COPYRIGHT. --------------------- perl -v This is perl, v5.8.8 built for x86_64-linux-gnu-thread-multi