If you care about the speed of your site, ZenCache is one of those plugins that you absolutely must have installed. ZenCache takes a real-time snapshot (building a cache) of every Page, Post, Category, Link, etc.
Bug Fix: Fixed an issue that was unexpectedly producing “Failed to update your /.htaccess file”
Bug Fix: Fixed an Auto-Cache Engine bug that was producing false-positive Dashboard errors related to timeouts: “Problematic XML Sitemap URL – WP_Http says: Operation timed out after 5001 milliseconds with 0 bytes received.” Due to the way ZenCache was checking the XML Sitemap URL more than necessary, timeouts were more likely to occur. We now only check the URL repeatedly when a failure has been encountered. If the URL is confirmed as working, we don’t check the URL again until the Auto-Cache Engine runs (every 15 minutes by default) or until the Plugin Options are saved. If you are still seeing timeout errors after this update, please see this article.
Bug Fix: Fixed an Auto-Cache Engine bug where ZenCache would would check both the non-SSL.
Enhancement: It’s now possible to override the ZenCache Nonce exclusion globally (dangerous) or only for Logged-In Users (safer). Please see this article for full details. Issue #637.
Akismet Compatibility: Fixed a bug with Akismet compatibility where ZenCache was not properly disabling the Akismet Comment Nonce...