Some addition: I activated some squid-debugging, and noticed: 2016/10/25 10:06:36.340 kid1| 84,5| helper.cc(1167) GetFirstAvailable: GetFirstAvailable: Running servers 1 2016/10/25 10:06:36.340 kid1| helperOpenServers: Starting 10/20 'delay_generate_204.sh' processes 2016/10/25 10:06:36.462 kid1| 84,5| helper.cc(1167) GetFirstAvailable: GetFirstAvailable: Running servers 10 Hlpr1 is never used later on It looks like, in case a second helper is requested, before the previous one could respond (I see 2 requests within 100ms), the second request is "lost". 15min later (timeout ?) this helper is considered "exited", and new helpers created. However, when killing squid later on, some of the first helpers stay alive. So the parent-child relation was lost somehow. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/external-acl-type-problem-tp4680203p4680295.html Sent from the Squid - Users mailing list archive at Nabble.com. _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users