Some type of loop, I suspect. As you probably have parent squids configured. In case, you have, pls also post parents squid.conf It (almost) always makes sense, to post the squid.conf here. Just guessing around does not help a lot. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/Squid-brought-down-by-hundreds-of-HEAD-request-to-itself-tp4665513p4665514.html Sent from the Squid - Users mailing list archive at Nabble.com.