Hi! I've set up a 5 squid sibling relationship. The problem is that when I restart them, they start sending ICPs without problem. But after a few seconds (no more than 20 seconds), they stop sending ICPs and start working as normal squids and I can't find why! :( This squids are caching images and swf's of a lot of high traffic sites. So i wanted to make them share their content in order to improve memory usage. Here's my config: acl RedPlaid src 208.XX.XX.0/255.255.255.0 acl squid1 src 208.74.XX.XX acl squid2 src 208.74.XX.XX acl squid3 src 208.74.XX.XX acl squid4 src 208.74.XX.XX acl squid5 src 208.74.XX.XX acl AllowedSites dstdomain "/etc/squid/allowed_sites" acl DeniedSites url_regex "/etc/squid/denied_sites" http_access allow AllowedSites !DeniedSites http_access allow localhost http_access deny all icp_access allow RedPlaid icp_access deny all miss_access deny squid1 squid2 squid3 squid4 miss_access allow all httpd_accel_host virtual httpd_accel_port 80 httpd_accel_single_host off httpd_accel_with_proxy on httpd_accel_uses_host_header on log_icp_queries on icp_hit_stale on cache_peer 208.74.XX.XX sibling 80 3130 proxy-only no-digest allow-miss cache_peer 208.74.XX.XX sibling 80 3130 proxy-only no-digest allow-miss cache_peer 208.74.XX.XX sibling 80 3130 proxy-only no-digest allow-miss cache_peer 208.74.XX.XX sibling 80 3130 proxy-only no-digest allow-miss Any clue?? Thanks! Santiago