Apple really screwed me up when they updated mod_ssl.so to fix the security issue and did not patch Apache at the same time. I'm as security conscious as the next guy, so I just automatically applied Security Update 2003-03-24 when Software Update opened. At worst, I figured my httpd.conf file may have been displaced again. To my chagrin and surprise, I opened up my browser and went to my local host and clicked on an https link and got nothing as in 'This page contains no data.'
Well it took a little net searching to find out that Apple had updated the mod_ssl.so object and apparently it is incompatible with the Apple-supplied Apache binary. So using Pacifist, I managed to extract the original 10.2 mod_ssl.so file from the Jaguar install CD. I simply moved the new version somewhere else and 'sudo' copied the old one into /usr -> libexec -> httpd. After I restarted Apache, all is well, if a little less secure.
[robg adds: This is the first I've heard of this, and I don't run the module myself, so I can't really confirm the problem. A quick web search didn't turn anything up, so I'm posting this in the hopes that others can confirm or deny the problem and the solution.]
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030402004719491