Apple released Security Update 2007-006 which is recommended for all
users and improves the security of the WebKit component.

Security Update 2007-006 is available via Software Update and also as
standalone installers.

More info and download links:

• Security Update 2007-006 (Universal) - 4.5MB
http://www.apple.com/support/downloads/securityupdate2007006universal.html

• Security Update 2007-006 (PPC) - 2.7MB
http://www.apple.com/support/downloads/securityupdate2007006ppc.html

• Security Update 2007-006 (10.3.9) - 2.2MB
http://www.apple.com/support/downloads/securityupdate20070061039.html

About Security Update 2007-006:
http://docs.info.apple.com/article.html?artnum=305759

Note: Security Update 2007-006 includes the same WebCore and WebKit
fixes that are in Safari Public Beta 3.0.2 and vice versa.