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About Safari 5.1.4 for OS X Lion

Safari 5.1.4 for OS X Lion contains improvements to performance, stability, compatibility, and security.

Safari 5.1.4 for OS X Lion includes changes that:

  • Improve JavaScript performance up to 11% over Safari 5.1.3* 
  • Improve responsiveness when typing into the search field after changing network configurations, or with an intermittent network connection 
  • Address an issue that could cause webpages to flash white when switching between Safari windows
  • Address issues that prevented printing U.S. Postal Service shipping labels and embedded PDFs 
  • Preserve links in PDFs saved from webpages 
  • Fix an issue that could make Flash content appear incomplete after using gesture zooming
  • Fix an issue that could cause the screen to dim while watching HTML5 video 
  • Improve stability, compatibility, and startup time when using extensions 
  • Allow cookies set during regular browsing to be available after using Private Browsing
  • Fix an issue that could cause some data to be left behind after pressing the “Remove All Website Data” button

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

* Testing conducted by Apple in January 2012 on a 2.7 GHz Quad-Core Intel Core i5-based iMac 21.5-inch system using OS X Lion v10.7.3 and configured with 4 GB of RAM and an AMD Radeon HD 6770M with 512 MB of VRAM. JavaScript benchmark based on SunSpider 0.9.1. Performance will vary based on system configuration, network connection, and other factors.

Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.
Last Modified: Mar 12, 2012
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  • Last Modified: Mar 12, 2012
  • Article: HT5142
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