A new update has been released by Apple a few days after releasing the 2007-009 security update. It is the version 1.1 of the update.
It is available for both Leopard and Tiger. If a user is using Leopard, then the download size is 35.6 MB. If he or she uses Tiger, then he or she can get download either the PowerPC version which is 15.9 MB or the Universal Binary version which is more than 11 MB larger.
The only difference between this and the first version is that it resolves an issue with the Safari internet browser.
Source: AppleInsider

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