Want the security goodness of 10.5.2 in a familiar, Tiger-iffic package? You want the new, much improved Security Update 2008-001, available now for client and server versions of 10.4.11. The update includes fixes for URL vulnerabilities in Mail, Terminal and Safari, patches for Parental Controls and X11, and more -- full list after the break.
You can find this update in Software Update or download direct from Apple. Happy patching!