Apple Issues First Mac Security Update for 2012

Apple has released its first 2012 security update to address more than 50 vulnerabilities for Mac OS X.
Updates are available for Mac IS X 10.7 (Lion), and for 10.6 (Snow Leopard).  OS X users should apply the appropriate update as soon as possible.

NOTE:  There have been reports of issues with version 10.7.3 including rendering the system unbootable, so users with that version should be careful applying the patches.  More info on the issues can be found at Apple: OS X Lion 10.7.3 and Security Update 2012-001

For more information:

EWeek:  Apples Fixes 52 Bugs in OS X
Cnet: OS X 10.7.3 Update Causing Issues
ComputerWorld: Apple Update Patches 51 bugs in Mac OS X