[squid-users] authentication problems

I want to use squid and dansguardign to filter by groups. It is working, sort
of.

Problem 1, after launching the web browser it takes a very long time (a
minute or 2) before the authentication dialog pops up. This needs to be
instant. What am I doing wrong? Once it does finally pop up, I can
authenticate and dansguardian does assign the proper filtering groups.

Problem 2, I would like anyone who fails to authenticate to be assigned a
user creditials; default-user. How would I do this?

Problem 3, Can I edit the text of the authentication dialog box?

Below this point is my squid.conf file...
http_port 3128
# acl QUERY urlpath_regex cgi-bin \? #Removed by Amos, suggested to speed up
web sites using media
#cache_mem 512 MB # May need to set lower if I run low on RAM
#maximum_object_size_in_memory 4096 KB #Increased by Amos, suggested to
speed up web sites using media
#maximum_object_size 1 GB
#cache_dir aufs /cache 500000 256 256
redirect_rewrites_host_header off
cache_replacement_policy lru

#auth_param basic program /usr/lib/squid/getpwnam_auth /etc/passwd
# above may require this at the end -> /etc/passwd
auth_param basic program /usr/lib/squid/ncsa_auth /etc/squid/passwd
auth_param basic children 5
auth_param basic realm blocker
auth_param basic credentialsttl 12 hours
auth_param basic casesensitive off
#auth_param basic max_challenge_lifetime 2 minutes
# above line fails

acl ncsa_users proxy_auth REQUIRED
acl all src all
acl localnet src 192.168.0.0/255.255.0.0
acl localhost src 127.0.0.1
acl to_localhost dst 127.0.0.0/8 0.0.0.0/8
acl Safe_ports port 80 81 443 210 119 70 21 1025-65535
acl SSL_Ports port 443
acl AUTH_users proxy_auth ant2ne xbox mandi

#acl internalSite1 dstdomain eaplus.altonschools.org
#acl internalSite2 dstdomain reports.altonschools.org
acl CONNECT method CONNECT

http_access deny !Safe_ports
http_access deny CONNECT !SSL_Ports
http_access allow ncsa_users
http_access allow AUTH_users
#http_access allow reports_Printing
#http_access allow internalSite1
#http_access allow internalSite2
http_access allow localnet
http_access allow localhost
http_access deny all

icp_port 0
refresh_pattern \.jpg$ 3600 50% 60
refresh_pattern \.gif$ 3600 50% 60
refresh_pattern \.css$ 3600 50% 60
refresh_pattern \.js$ 3600 50% 60
refresh_pattern \.html$ 300 50% 10
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern -i (/cgi-bin/|\?) 0 0% 0
refresh_pattern . 0 20% 4320
#access_log /var/log/squid/access.log squid
visible_hostname BLOCKER

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