Security Update 2004-04-05 is now available for both 10.2.8 and 10.3.3. It is about 3MB, and hasn't appeared to break anything in the few minutes I've been running it.
> Security Update 2004-04-05 delivers a number of security > enhancements and is recommended for all Macintosh users. > This update includes the following components: > > CUPS Printing > libxml2 > Mail > OpenSSL Ryan
