Hello, I come back to this list. I am working with squid several months ago. I have worked with squid-2.5 and now with squid-3.0. I have several configurations with squid-3.0 working correctly in a distro called 'Guadalinex 2004'(a debian system based) but I have found some problems when I wanted to reproduce the system in other release of this distro 'Guadalinex 3' (a ubuntu system based). The kernel of the first distro was a 2.6.5, the new kernel is a 2.6.12-9. Both installations of squid works with squidGuard-1.2.0. The configuration in both is the same (squid,squidguard,iptables,...) but in this new system I only obtain the window: ERROR The requested URL could not be retrieved 'Access denied' ... I haven't found any warning or error message in the squid'logs. Squid starts and stops with apparent normality. The configuration file of squid is very simple: http_port 3128 transparent hierarchy_stoplist cgi-bin ? acl all src 0/0 no_cache deny all cache_dir null /tmp access_log /usr/squid/var/logs/access.log cache_log /usr/squid/var/logs/cache.log cache_store_log /usr/squid/var/logs/store.log hosts_file /etc/hosts redirect_program /usr/squidGuard/bin/squidGuard -c /usr/squid/etc/squidGuard.conf redirect_children 4 refresh_pattern ^ftp: 1440 20% 10080 refresh_pattern ^gopher:1440 0% 1440 refresh_pattern . 0 20% 4320 acl localhost src 127.0.0.1/255.255.255.255 http_access allow localhosts http_access deny all http_reply_access allow all icp_access allow all cache_effective_user squid cache_effective_group squid visible_hostname acept coredump_dir /usr/squid/var/cache What would be the problem?¿ This configuration works properly in the previous system. Thanks in advance. Maria D.