I need help with my squid ACL;s. I am trying to allow specific computers access to specific sties at specific times of day. The problem is this... When I uncomment the http_access deny all after the Student_Net stuff, it blocks everything and when it is commented it allows everything. I checked the date/time on the server this runs on and it is accurate. I don't know what else it could be?

Here is my current squid.conf (Squid 3)
icp_port 3130
hierarchy_stoplist cgi-bin ?
acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
 access_log /var/log/squid3/access.log
 cache_log /var/log/squid3/cache.log
 cache_store_log /var/log/squid3/store.log
refresh_pattern ^ftp:           1440    20%     10080
refresh_pattern ^gopher:        1440    0%      1440
refresh_pattern .               0       20%     4320
#  ACL's Section
acl our_nets src

# AM/PM class time
acl AM_Class_Hrs time MTWHF 08:00-11:30
acl PM_Class_Hrs time MTWHF 11:30-15:00

acl AM_Good_Sites url_regex -i ^http://www.google.com/a/mySite.com
acl AM_Good_Sites url_regex -i ^https://www.google.com/a/mySite.com
#acl AM_Good_Sites url_regex -i ^http://www.mySite.com
#acl AM_Good_Sites url_regex -i ^https://www.mySite.com
acl AM_Good_Sites url_regex -i mySite.com
acl AM_Good_Sites url_regex -i netacad.net
acl AM_Good_Sites url_regex -i cisco.com

#acl Student_Net src
acl Student_Net src

acl all src
acl manager proto cache_object
acl localhost src
acl to_localhost dst
acl SSL_ports port 443
acl Safe_ports port 80          # http
acl Safe_ports port 21          # ftp
acl Safe_ports port 443         # https
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

# HTTP_ACCESS section
http_access allow Student_Net AM_Class_Hrs AM_Good_Sites
http_access allow Student_Net PM_Class_Hrs AM_Good_Sites
http_access deny Student_Net
#http_access deny all

http_access allow manager localhost
http_access deny manager
http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
#http_access allow our_nets
http_access allow localhost
http_access deny all
http_reply_access allow all
#icp_access allow all
debug_options ALL, 1 33, 2 28, 9
coredump_dir /var/spool/squid3