squid nao faz restricao de sites..

Prezados amigos...estou ficando loco com squid ele nao esta fazeno restricoes de acesso..meu servidor ser um red hat 9.0
com squid-2.5.STABLE1-2
Mais foda de tudo que ele nao da messages de erro
quen ja passou por isso tem como dar um dica

ja foram criados os arquivos blacklist --> Seria pra bloquear as palavras ou site
e o whitelist seria pra liberar o sites
ai vai meu squid.conf

http_port 3128
cache_mem 100 MB
cache_swap_low 95
cache_swap_high 98
maximum_object_size 61440 KB
maximum_object_size_in_memory 4096 KB
cache_dir ufs /var/spool/squid 3000 16 256
cache_access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
emulate_httpd_log on
log_fqdn on
ftp_passive on
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
acl all src 0.0.0.0/0.0.0.0
acl manager proto cache_object
acl localhost src 127.0.0.1/255.255.255.255
acl empresa src 192.168.0.0/255.255.255.0
acl SSL_ports port 443 563
acl Safe_ports port 80 21 443 563 70 210 1025-65535
acl Safe_ports port 280 # http-mgmt
acl Safe_ports port 488 # gss-http
acl Safe_ports port 591 # filemaker
acl Safe_ports port 777 # multiling http
acl CONNECT method CONNECT
acl whitelist url_regex "/etc/squid/whitelist"
acl blacklist url_regex "/etc/squid/blacklist"
acl download urlpath_regex .exe$ .zip$ .arj$ .tar.gz$ .tgz$ .rpm$ .mp3$
http_access allow manager localhost all
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow empresa
http_access allow whitelist
http_access deny !blacklist
http_access deny all
icp_access allow all
miss_access allow all
cache_effective_user squid
cache_effective_group squid
httpd_accel_host virtual
httpd_accel_port 80
httpd_accel_with_proxy on
httpd_accel_uses_host_header on
cache_mgr [email protected]
visible_hostname proxy.zoioroxo.com.br