When I was checking /var/log/messages for another reason, I noticed errors like:
Nov 14 09:32:38 e-smith (squid): Cannot open /var/log/squid/access.log: (13) Permission denied
Nov 14 09:32:38 e-smith squid[613]: Exiting due to repeated, frequent failures
/var/log/squid is owned by 23.23, not squid.squid. I can chown easily enough, but should I do so, or is something else going on here?