Apple - Apple Releases OS X Lion 10.7.4 and Fixes FileVault Bug. Twitter: http://twitter.com/SummerWizz1 Tumblr: http://SummerWizz1.tumblr.com Facebook App: http://bit.ly/SW1FBAPP Facebook Page: http://on.fb.me/SummerWizz1 Youtube Channel: http://youtube.com/SummerWizz1 More Info / Source: http://mashable.com/2012/05/10/os-x-lion-10-7-4/