Comment 18 for bug 573853

I solved it for my case by reducing the "shutdown_lifetime" to 1 seconds in "/etc/squid/squid.conf" and modifying the
script in "/etc/resolvconf/update-libc.d/squid" to replace

restart squid
by
stop squid;sleep 1;start squid

Which defeat the "restart" intended behavior but doesn't need to wait forever. Could upstart directly get the value of "shutdown_lifetime" from the squid configuration file?