Yann "Bug" Dubois

Ever since WordPress 3.0 was released, the TwentyTen theme bundled with the distribution has included a feature do dynamically manage the content and organization of menu items from inside the WordPress administration interface. Here’s a step-by-step guide to integrate that feature to any existing WP theme.

When file permissions are not setup the way it expects, WordPress cannot use the automatic upgrade feature and prompts you for FTP or SFTP credentials to perform any upgrade on a theme, plugin or the core WP files. This happens even when WordPress does have actual write permissions on the files that need to be upgraded.