Milhões não, milhares, não exagere.
Poste seu squid.conf pra gente analisar (por favor, remova os comentários antes).
segue:
http_port 3128
visible_hostname FEDERZONI
cache_mem 256 MB
cache_dir ufs /var/spool/squid3 100 16 256
coredump_dir /var/spool/squid3
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern (Release|Packages(.gz)*)$ 0 20% 2880
refresh_pattern . 0 20% 4320
acl SSL_ports port 443
acl Safe_ports port 80
acl Safe_ports port 21
acl Safe_ports port 443
acl Safe_ports port 70
acl Safe_ports port 210
acl Safe_ports port 1025-65535
acl Safe_ports port 280
acl Safe_ports port 488
acl Safe_ports port 591
acl Safe_ports port 777
acl CONNECT method CONNECT
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
http_access allow localhost manager
http_access deny manager
acl redelocal src 192.168.115.0/24
http_access allow redelocal
http_access allow localhost
http_access allow all