Not intentional, but I accidentally checked the update to 10.5.4 when I was running another software update on the mail/web server. I haven't rebooted it yet, need to make sure that I've got a good backup first, just in case...
10.5.3 introduced an issue with getaddrinfo (again?) and this is supposed to be fixed with 10.5.4, so hopefully I'll have nothing to worry about.
