Boa tarde,
Minha situação é semelhante. Nos últimos 15 dias configurei uns 5 pfsense, nesta semana estou com um que tbm iniciei do zero, instalei os pacotes squidguard e em seguida squid e de forma alguma o squidguard inicializa. Estou usando versão 2.0 como nos demais que funcionaram.
No log ao iniciar o squidguard:
May 7 15:11:32 syslogd: kernel boot file is /boot/kernel/kernel
May 7 15:11:37 check_reload_status: Syncing firewall
May 7 15:11:37 check_reload_status: Syncing firewall
May 7 15:11:37 php: /pkg_edit.php: Reloading Squid for configuration sync
May 7 15:11:37 squid[1070]: url_rewrite_program /usr/pbi/squidguard-i386/bin/squidGuard: (2) No such file or directory
May 7 15:11:37 php: /pkg_edit.php: The command '/usr/local/sbin/squid -k reconfigure' returned exit code '6', the output was 'FATAL: url_rewrite_program /usr/pbi/squidguard-i386/bin/squidGuard: (2) No such file or directory Squid Cache (Version 2.7.STABLE9): Terminated abnormally. CPU Usage: 0.003 seconds = 0.000 user + 0.003 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 0'
May 7 15:11:37 kernel: pid 1070 (squid), uid 0: exited on signal 6
May 7 15:11:39 php: /pkg_edit.php: Reloading Squid for configuration sync
May 7 15:11:39 squid[27004]: url_rewrite_program /usr/pbi/squidguard-i386/bin/squidGuard: (2) No such file or directory
May 7 15:11:39 php: /pkg_edit.php: The command '/usr/local/sbin/squid -k reconfigure' returned exit code '6', the output was 'FATAL: url_rewrite_program /usr/pbi/squidguard-i386/bin/squidGuard: (2) No such file or directory Squid Cache (Version 2.7.STABLE9): Terminated abnormally. CPU Usage: 0.003 seconds = 0.000 user + 0.003 sys Maximum Resident Size: 0 KB Page faults with physical i/o: 0'
May 7 15:11:39 kernel: pid 27004 (squid), uid 0: exited on signal 6