Apple on Monday released an updated version of Safari that promises an 11 percent boost in JavaScript performance, among other things.

Apple on Monday released an updated version of Safari that promises an 11 percent boost in JavaScript performance, among other things.

The update, Safari 5.1.4 for OS X Lion, was detailed on Apple's support forum, and includes 10 updates and fixes.

The JavaScript boost will improve performance by up to 11 percent over Safari 5.1.3, Apple said, though performance will, of course, vary based on systems, networks, and other factors, the company was quick to point out.

Apple also promised improved responsiveness when typing in the search field after network configurations were changed or if network connections were intermittent.

Safari 5.1.4 also addresses a number of issues, Apple said, including those that: could cause webpages to flash white when switching between Safari windows; prevent the printing of U.S. Postal Service shipping labels and embedded PDFs; make Flash content appear incomplete after using gesture zooming; cause the screen to dim while watching HTML5 video; and cause some data to be left behind after pressing the "Remove All Website Data" button.

Apple said the Safari update also preserves links in PDFs saved from webpages, allows cookies set during regular browsing to be available after using Private Browsing, and improves stability, compatibility, and startup time when using extensions.

More extensive details about the update are available on Apple's website.

Safari last made headlines in February when a Stanford University graduate student, Jonathan Mayer, released a report that accused Google and three other ad networks of to track usage on iPhones and Macs without permission. Microsoft later of doing the same thing with IE.

Also last month, Apple released a developer preview of Mac OS X Mountain Lion, the next version of its operating system and a followup to last year's . For more, see and the slideshow below.