On Sunday May 21st, 2006 we will be patching all our OS X 10.3 & 10.4 servers with the latest security update (Security Update 2006-003) released by Apple on May 8th, 2006. This maintenance will take place at 12pm PDT. The update will require a reboot of the server. Downtime should be no less then 5 to 10 minutes depending on the server configuration.

You can find more information regarding Security Update 2006-003 on Apple's website or by clicking this link: http://docs.info.apple.com/article.html?artnum=303737