WordPress 3.1 was released yesterday and it added a lot of features which can be used by developers. Additionally, it has also added features like the admin bar which provides easy access to administration functions in WordPress. This feature is pretty similar to what WordPress.com users see.
However, there are several people who do not like this new feature and there is an easy way to disable it. To disable the admin bar follow the steps given below.
Step 1: Login to your WordPress dashboard.
Step 2: In the right hand side, click on your name.
Step 3: Clicking on your name will take you to your profile page. On this page, uncheck the boxes next to the "Show Admin bar" and save your settings.
This should disable the admin bar in WordPress 3.1 for your profile. However, you will have to do this for multiple profiles. If you are looking to disable it site wide you can use the plugin Disable Admin Bar.