On Wednesday, Apple released Safari 5.1.7, an update to its web browser. The new version, a 45 megabyte download, includes the following fixes and new features:

- Improve the browser’s responsiveness when the system is low on memory.

- Fix an issue that could prevent webpages from responding after using a pinch to zoom gesture.

- Fix an issue that could affect websites using forms to authenticate users.

- Disable versions of Adobe Flash Player that do not include the latest security updates and provide the option to get the current version from Adobe’s website.

Safari 5.1.7 requires an Intel-based Mac running Mac OS X 10.7.3 or later to install and run. If you’ve tried the new version and have any feedback to offer, please let us know.