TCP_HIT в Squid

Помогите разобратся, чего нехватает в моем конфиге, для того чтобы squid брал объекты из кэша? Squid работает уже 4 дня на 8 пользователей, du -sh /var/cache/squid = 18M, при этом в access.log ни одной записи TCP_HIT, лиш изредка проскакивает TCP_IMS_HIT. В чем проблема?

Вот мой конфиг:

http_port 3128
visible_hostname PROXY
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin \?
no_cache deny QUERY
maximum_object_size 16384 KB
cache_dir ufs /var/cache/squid 1024 16 256
cache_access_log /var/log/squid/access.log
cache_log /var/log/squid/cache.log
cache_store_log /var/log/squid/store.log
pid_filename /var/run/squid.pid
emulate_httpd_log on
ftp_user squid@aaanet.ru
ftp_list_width 32
ftp_passive on
hosts_file /etc/hosts
client_netmask 255.255.255.0

auth_param basic program /usr/lib/squid/mysql_auth
auth_param basic children 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
authenticate_cache_garbage_interval 1 hour
authenticate_ttl 1 minutes
authenticate_ip_ttl 0 seconds

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 to_localhost dst 127.0.0.0/8
acl SSL_ports 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 1025-65535 # unregistered ports
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

http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
acl password proxy_auth REQUIRED
http_access allow password
http_access deny all
http_reply_access allow all

cache_effective_user squid
cache_effective_group squid
#logfile_rotate 0
error_directory /usr/share/squid/errors/Russian-koi8-r

coredump_dir /var/cache