[squid-users] external_acl_type helper exiting

HI Guys,

I have a problem where the helpers are exiting after a period of time
in an external_acl_type setup.
The acl is defined as follows:

external_acl_type portal_page ipv4 children-idle=5 children-startup=5
ttl=60 negative_ttl=0 concurrency=20 %SRC
/usr/local/bin/portal-authenticator

portal-authenticator is a Golang program that runs indefinitely. I
have turned on debug_options ALL,1 82,9 but that has not indicated why
the helper exits. If i run the helper manually I can leave it for days
without it exiting. I have bumped up debug_options to ALL,9 to see
whether there is anything else I can see but so far nothing.

Here is an extract from cache.log (the last log entry been related to
the bug 3751):

2013/09/26 11:44:37.017 kid1| WARNING: portal_page #5 exited
2013/09/26 11:44:37.017 kid1| Too few portal_page processes are
running (need 1/15)
2013/09/26 11:44:37.017 kid1| Starting new helpers
2013/09/26 11:44:37.017 kid1| helperOpenServers: Starting 1/15
'portal-authenticator' processes
2013/09/26 11:44:37.017 kid1| WARNING: no_suid: setuid(0): (1)
Operation not permitted

thanks

-- 
.warren