The OS X 10.7.5 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).
What's new in version 10.7.5
The OS X 10.7.5 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 t