Apple just released Safari 5.1.4 through Software Update with a long list of security and stability fixes and improvements. You can download Safari 5.1.4 here or through Software Update now. The update’s release notes and a full list of fixes for Lion and Snow Leopard are below.

Safari 5.1.4 contains improvements to performance, stability, compatibility, and security, including changes such as: 

For Lion:

  • Improve JavaScript performance
  • 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 Snow Leopard:

  • 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

  • Correct the contents of context menus on webpages that are PDFs

  • 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

  • Apple seeds devs with Safari 5.2 for Lion, Xcode 4.4 with new LLVM compiler (9to5mac.com)

  • Apple seeds Safari 5.1.4 to devs: Speedier Javascript on Lion, fixes for plug-ins, zooming using gestures, printing PDFs (9to5mac.com)

  • Google reportedly forcing advertising cookies upon iPhone users regardless of Safari privacy settings (9to5mac.com)