Mac OS X 10.7.5

OS X 10.7.5 was an update to OS X 10.7 released on September 19, 2012. It includes improvements to:
 * Resolve an issue where icons in Launchpad may get rearranged after a restart
 * Improve Wi-Fi reliability for iMac (Late 2009 and newer)
 * Resolve an issue using Spotlight to search an SMB server
 * Improve compatibility connecting to Active Directory servers

Supplemental Update
The OS X v10.7.5 Supplemental Update was released on October 4, 2012 and is recommended for all users running OS X Lion v10.7.5. It 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

External References

 * OS X Lion 10.7.5 Supplemental Update at Apple