Wordpress - missing tool bar from visual editor after upgrading wordpress

WordPress 2.8 is available for upgrade from either the Dashboard (by 1 click upgrade) or manually download it from wordpress.org and install it through command line. If you are using the first option, which upgrade through the Dashboard, you might noticed that after the upgrade, the Visual Editor might stop working or the tool bar is missing from the Visual Editor. Google it will bring you to wordpress.org and recommand you to do some tedious troubleshooting steps.

This blog have just upgraded and encounter the same problem. After following the recommendations, step 3 of it works, which is removing the current wp-includes and wp-admin folder then replace it with the latest version of it by downloading latest.tar.gz from wordpress.org and extract from it.

Ciao !!!