Security Update 2007-009 1.1がソフトウェア・アップデート経由で出ています。SU2007-009 1.0適用後のSafariの不具合が解消されている模様です。以下、Apple Product Securityからのメールを引用。
Security Update 2007-009 v1.1
Security Update 2007-009 v1.1 is now available for Mac OS X v10.5.1 and Mac OS X v10.4.11. It addresses an issue introduced in Security Update 2007-009 that causes an unexpected termination of the Safari application when browsing to certain web sites.
There is no change to the security content provided in Security Update 2007-009. The security content of Security Update 2007-009 and Security Update 2007-009 v1.1 is available via http://docs.info.apple.com/article.html?artnum=307179
Security Update 2007-009 v1.1 will install over Security Update 2007-009, and its installation is recommended to correct the Safari issue.
Systems that have not yet installed Security Update 2007-009 only need to install Security Update 2007-009 v1.1.
Security Update 2007-009 v1.1 may be obtained from the Software Update pane in System Preferences, or Apple's Software Downloads web site: http://www.apple.com/support/downloads/
For Mac OS X v10.5.1
The download file is named: "SecUpd2007-009.dmg"
Its SHA-1 digest is: 0ba35ef30a525792f1d4015395997b42f524dd38
For Mac OS X v10.4.11 (Universal)
The download file is named: "SecUpd2007-009Univ.dmg"
Its SHA-1 digest is: 49f52d4f647ea4a1fabef34cccac263bfd03791a
For Mac OS X v10.4.11 (PPC)
The download file is named: "SecUpd2007-009Ti.dmg"
Its SHA-1 digest is: d1c5c4bc23267dd846bb96e7be69b084579c1bba
Information will also be posted to the Apple Security Updates web site: http://docs.info.apple.com/article.html?artnum=61798