[squid-users] access denied without prompting for login

Hi
I have the following squid config (below) that worked for a while then
squid started giving page faults so I removed squid then reinstalled
it now when I try to open a site I get access denied with out even
being prompted for my username and password. I have tested the ldap
auth and that is working from the command line.. What have I missed ?
what caused it to break?
Current version of squid 2.6.STABLE16
on Fedora 8

thanks

auth_param basic children 5
auth_param basic realm Squid proxy-caching web server
auth_param basic credentialsttl 2 hours
auth_param basic program /usr/lib64/squid/squid_ldap_auth -R -b
"OU=Organizational Structure,DC= <snip>
acl ldapauth proxy_auth REQUIRED
http_access allow ldapauth

acl all src 0.0.0.0/0.0.0.0
acl locallan src 10.0.1.0/255.255.255.255
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
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
acl CONNECT method CONNECT

http_access deny !Safe_ports
http_access deny CONNECT !SSL_ports
visible_hostname greg-test
http_access allow localhost
http_access deny all
http_port 3128

hierarchy_stoplist cgi-bin ?
maximum_object_size_in_memory 50 KB
cache_replacement_policy heap LFUDA
maximum_object_size 4096 KB
access_log /var/log/squid/access.log squid

acl QUERY urlpath_regex cgi-bin \?
cache deny QUERY
refresh_pattern ^ftp: 1440 20% 10080
refresh_pattern ^gopher: 1440 0% 1440
refresh_pattern . 0 20% 4320
quick_abort_min 0 KB
quick_abort_max 0 KB
quick_abort_pct 95
acl apache rep_header Server ^Apache
broken_vary_encoding allow apache
half_closed_clients off
dns_nameservers 10.0.1.250 196.33.158.230 66.8.85.139
memory_pools off
coredump_dir /var/spool/squid
Received on Wed Oct 01 2008 - 13:36:54 MDT