The 10.8.5 update is recommended for all OS X Mountain Lion users and improves the stability, compatibility, and security of your Mac. This update:

• Fixes an issue that may prevent Mail from displaying messages
• Improves AFP file transfer performance over 802.11ac Wi-Fi
• Resolves an issue that may prevent a screen saver from starting automatically
• Improves Xsan reliability

For detailed information about this update, please visit: http://support.apple.com/kb/HT5815

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

SHA1 =cb798ac9b97ceb2d8875af040ce4ff06187d61f2