muito bom amigo mas o meu aque não deu certo. ainda continua. o mesmo erro. segue meu squid.conf squid 2.6 stable20
################################################
##### Porta, Nome e Cache #####
################################################
#
http_port 3128
visible_hostname xxxxxxxxxxxxxxxx
cache_mem 64 MB
maximum_object_size_in_memory 64 KB
half_closed_clients off
maximum_object_size 1024 MB
minimum_object_size 0 KB
cache_swap_low 80
cache_swap_high 100
cache_dir ufs /var/squid/cache/1 2900 128 256
cache_dir ufs /var/squid/cache/2 2900 128 256
cache_dir ufs /var/squid/cache/3 2900 128 256
cache_dir ufs /var/squid/cache/4 2900 128 256
cache_dir ufs /var/squid/cache/5 2900 128 256
cache_access_log /var/log/squid/access.log
cache_store_log /var/log/squid/store.log
cache_log /var/log/squid/cache.log
cache_access_log /var/log/squid/access.log
cache_dir ufs /var/spool/squid 20000 16 256
refresh_pattern ^ftp: 1440 20% 20080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
#
################################################
##### ACLs #####
################################################
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 SSL_ports port port 443 563
acl Safe_ports port 80 # http
acl Safe_ports port 21 # ftp
acl Safe_ports port 443 563 # https, snews
acl Safe_ports port 70 # gopher
acl Safe_ports port 210 # wais
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 Safe_ports port 901 # swat
acl Safe_ports port 1025-65535 # portas altas
acl purge method PURGE
acl CONNECT method CONNECT
http_access allow manager localhost
http_access deny manager
http_access allow purge localhost
http_access deny purge
#
################################################
## USANDO NCSA_AUTH ##
################################################
#
auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/passwd
auth_param basic realm Prefeitura Municipal de Campina Verde
#auth_param basic children 5
#
################################################
## AUTENTICAÇÃO ## #
acl autenticados proxy_auth REQUIRED
################################################
#
################################################
## Liberando Windows Live ##
################################################
acl MsnSources url_regex -i "/etc/squid/site_msn.txt"
acl MsnDomains dstdomain -i "/etc/squid/site_msn.txt"
acl MsnUrls urlpath_regex -i "/etc/squid/site_msn.txt"
acl MsnProgram req_mime_type application/X-msn-messenger
acl MsnManual dstdomain byrdr.omega.contacts.msn.com local-bay.contacts.msn.com byfiles.storage.msn.com akhtm.nspmotion.com blufiles.storage.msn.com
www.gowindowslive.com view.atdmt.com local-sn.contacts.msn.com ec.atdmt.com tkrdr.storage.msn.com livefiles19.vo.msecnd.net
www.sqm.microsoft.com sqmserver.dll switch.atdmt.com rsi.hotmail.com nspmotion.com icover.com.br rad.msn.com rmd.atdmt.com t.msn.com
acl MSNUser proxy_auth msn
http_access allow MsnManual
http_access deny MSNUser !MsnSources !MsnDomains !MsnUrls !MsnProgram
###############################################
## Acesso liberado ##
###############################################
acl site_liberado url_regex -i "/etc/squid/site_liberado.txt"
http_access allow site_liberado
#
################################################
## Bloqueio de Download por extenções ##
################################################
acl download url_regex -i "/etc/squid/download.txt"
http_access deny download
#
################################################
## Bloqueio de Sites e liberados ##
################################################
#
acl bloqueio_palavras url_regex -i "/etc/squid/bloqueio_palavras.txt"
acl sites_nocivos url_regex -i "/etc/squid/sites_nocivos.txt"
http_access deny sites_nocivos
http_access deny bloqueio_palavras
#
################################################
## BLOQUEIA ORKUT ##
################################################
#
acl bloqueio_orkut url_regex -i "/etc/squid/bloqueio_orkut.txt"
http_access deny bloqueio_orkut
#
################################################
## BLOQUEIA GOOGLE TALK ##
################################################
#
acl bloqueio_googletalk url_regex -i "/etc/squid/bloqueio_googletalk.txt"
http_access deny bloqueio_googletalk
#
http_access allow autenticados !bloqueio_orkut !bloqueio_palavras !sites_nocivos
http_access deny bloqueio_palavras bloqueio_orkut sites_nocivos
#
################################################
# Radios e Conteudo Streaming ##
################################################
acl streaming rep_mime_type ^video/x-ms-asf
acl proibir_musica urlpath_regex -i \.aif$ \.aifc$ \.aiff$ \.asf$ \.asx$ \.avi$ \.au$ \.m3u$ \.med$ \.mp3$ \.m1v$ \.mp2$ \.mp2v$ # \.mov$ \.mpe$ \.mpg$ \.mpeg$ \.ogg$ \.pls$ \.ram$ \.ra$ \.ram$ \.snd$ \.wma$ \.wmv$ \.wvx$ \.mid$ \.midi$ \.rmi$
http_access deny proibir_musica
http_reply_access deny streaming
###############################################
## Bloqueios de conteudo radias e video ##
###############################################
acl streaming rep_mime_type -i "/etc/squid/mimeaplicativo.txt"
acl proibir_musica urlpath_regex -i "/etc/squid/audioextension.txt"
###############################################
## RADIOS E VIDEOS ##
###############################################
acl StreamingRequest1 req_mime_type -i ^video/x-ms-asf$
acl StreamingRequest2 req_mime_type -i ^application/vnd.ms.wms-hdr.asfv1$
acl StreamingRequest3 req_mime_type -i ^application/x-mms-framed$
acl StreamingRequest4 req_mime_type -i ^audio/x-pn-realaudio$
acl StreamingReply1 rep_mime_type -i ^video/x-ms-asf$
acl StreamingReply2 rep_mime_type -i ^application/vnd.ms.wms-hdr.asfv1$
acl StreamingReply3 rep_mime_type -i ^application/x-mms-framed$
acl StreamingReply4 rep_mime_type -i ^audio/x-pn-realaudio$
################## RADIO VIDEO ###########################
http_access deny StreamingRequest1 all
http_access deny StreamingRequest2 all
http_access deny StreamingRequest3 all
http_access deny StreamingRequest4 all
http_reply_access deny StreamingReply1 all
http_reply_access deny StreamingReply2 all
http_reply_access deny StreamingReply3 all
http_reply_access deny StreamingReply4 all
################################################
#
acl redelocal src 192.168.0.0/255.255.255.0
http_access allow localhost
#
http_access deny all
memory_replacement_policy heap LRU
cache_mgr xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
request_body_max_size 900 KB
cache_effective_user squid
cache_effective_group squid
error_directory /usr/share/squid/errors/Portuguese
cache deny streaming StreamingRequest1 StreamingRequest2 StreamingRequest3 StreamingRequest4 StreamingReply1 StreamingReply2 StreamingReply3 StreamingReply4 redelocal