Hi, I am having a problem where squid is not marking a parent as being alive when it returns from down state. Squid marks the parent down successfully, and in the cache log I can see connect failures to the parent on the cache port. But after a while those errors stop, but the parent never gets marked as being back up. Any ideas? Below is my squid.conf half_closed_clients off append_domain .hostname.com http_port 3128 transparent icp_port 3130 cache_mem 32 MB acl all src 0.0.0.0/0.0.0.0 acl localhost src 127.0.0.1/255.255.255.255 acl SSL_ports port 443 563 acl Safe_ports port 21 70 80 81 210 443 488 591 777 1025-65535 acl CONNECT method CONNECT always_direct deny all never_direct allow all acl QUERY urlpath_regex cgi-bin \? no_cache deny QUERY cache_swap_low 90 cache_swap_high 96 maximum_object_size 32768 KB minimum_object_size 0 KB maximum_object_size_in_memory 128 KB ipcache_size 10240 ipcache_low 90 ipcache_high 95 fqdncache_size 10240 log_fqdn off memory_pools off cache_replacement_policy heap GDSF memory_replacement_policy lru cache_dir ufs /mnt/cache 12000 16 256 log_mime_hdrs on logformat squid %ts.%03tu %6tr %>a %Ss/%03Hs %<st %rm %ru %un %Sh/%<A %mt %>st cache_access_log /var/log/squid/access.log squid cache_log /var/log/squid/cache.log cache_store_log none pid_filename /usr/local/squid/logs/squid.pid store_dir_select_algorithm round-robin debug_options ALL,1 ftp_user opteq@ ftp_passive on dns_timeout 50 seconds quick_abort_min 10 kb quick_abort_pct 50% quick_abort_max 1024 kb negative_ttl 2 minute range_offset_limit 0 KB connect_timeout 20 second cache_peer 10.200.94.93 parent 3128 3130 default no-query login=PASS http_access deny !Safe_ports http_access deny CONNECT !SSL_ports http_access allow all icp_access allow all cache_mgr support@xxxxxxxxxxxx cache_effective_user nobody cache_effective_group nobody visible_hostname my.hostname.com dns_testnames localhost forwarded_for on ie_refresh on acl localSnmp snmp_community public snmp_port 3401 snmp_access allow localSnmp localhost snmp_access deny all snmp_incoming_address 0.0.0.0 snmp_outgoing_address 255.255.255.255 peer_connect_timeout 30 seconds dead_peer_timeout 30 seconds httpd_suppress_version_string = on Im running 2.6.STABLE12. The strange thing is I have this running in another location using a very simlar setup and it auto marks the parents as alive when they return, only this one doesnt. Thanks in advance, Ian