Apple has released Security Update 2007-009 via its Software Update pane and on the Web. It is available for 10.4.11 Universal, 10.4.11 PPC, and Mac OS X 10.5.1. Apple says this update is recommended for all users and improves the security of the following components: Address Book, CUPS, ColorSync, Core Foundation, Desktop Services, Flash Player Plug-in, gnutar, iChat, IO Storage Family, Launch Services, Mail, perl, python, ruby, Samba, Safari, Shockwave Plug-in, SMB, Spotlight, tcpdump, and XQuery.