OS X Lion 10.7.5 Supplemental Update
The OS X v10.7.5 Supplemental Update is recommended for all users running OS X Lion v10.7.5 and includes the following fixes:
- Resolves an issue that may cause Time Machine backups to take a very long time to complete
- Addresses an issue that prevents certain applications signed with a Developer ID from launching
The Supplemental Update is recommended if you installed the Mac OS X Lion v10.7.5 Update (build 11G56).
It is not needed if you install the Mac OS X Lion v10.7.5 Update (build 11G63).
See this article on how to verify the authenticity of this update.