This update includes fixes which resolves an issue where icons in Launchpad can be rearranged after the reboot of the system. Gatekeeper also lets you tweak settings which will let you install the apps from different places like from Mac App Store or any 3 rd person developers with signed apps. Mac OS X Lion 10.7.5 has got Gatekeeper which is a new security feature which will let you keep your Mac safe from many malicious software in order to give you more control over the applications that are installed on your Mac. You can also download Mac OSX lion v10.7.4 DMG. Mac OS X Lion 10.7.5 includes includes general operating system fixes which will enhance the stability, security and compatibility of your Mac OS. Mac OS X Lion 10.7.5 is an upgrade of OS X version 10.7 which is also known as Lion. It is full offline installer standalone setup of Mac OS X Lion 10.7.5 DMG. Mac OS X Lion 10.7.5 DMG Free Download Latest Version for Windows.