Since updating to 2.006 (upgrade to Debian Wheezy) I'm seeing a lot of this in my logs: 2013-05-24T20:28:10.693811-04:00 qa1 saslauthd: Right here It seems to be a warning in Net::Server, that still exists in 2.007. I guess its leftover debug code?(oddly enough this appears to be in code dealing with IPv6. While this particular daemon is bound to an IPv6 address by virtual of binding to *, its not accepting connections IPv6 connections. So I might have a setup problem in code somewhere, or there's a further bug. I'll look into it sometime).