WordPress 2.9.1 has been recently released, and is now available for public download. This release fixes several minor issues bugs which caused problems with scheduling posts and pingbacks in wordpress 2.9 etc. Here is the list of issues faced by users in wordpress 2.9
Note: The latest stable release of WordPress (Version 2.9.1) is available in two formats from the links to your right.
How To Upgrade?
You can either download WordPress 2.9.1 and upload Via FTP to your server, please refer instructions here or use the automatic upgrade feature to upgrade from the admin dashboard, as shown in the image below.