The OS X v10.8.5 Supplemental Update is recommended for all users running OS X Mountain Lion v10.8.5. This update:

• Resolves an issue that may prevent certain applications from using the FaceTime HD camera on mid-2013 MacBook Air systems
• Fixes an issue that may cause external drives to be ejected after the computer goes to sleep
• Addresses an issue that may prevent HDMI audio from working after waking from sleep
• Fixes an issue that may prevent certain USB Bluetooth adapters from working

 SHA1: 18636c06f0db5b326752628fb7a2dfa3ce077ae1

For information on the security content of this update, please visit: http://support.apple.com/kb/HT1222