Apple has released a recommended security upgrade for all users today. Here are the release notes as they show up on my MacBook Pro: Security Update 2007-005 is recommended for all users and improves the security of the following components: bind CarbonCore CoreGraphics crontabs fetchmail file iChat mDNSResponder PPP ruby screen texinfo VPN Security Update 2007-004 has been incorporated into this security update. For detailed information on this update, please visit this website: http://docs.info.apple.com/article.html?artnum=61798 ]]>