With the release of the version WordPress 3.2, a useful novelty has appeared for many users of WordPress, but upsetting for some. WordPress Admin Bar. Admin bar which appears after the user is logged on blog, and which contains quick links to Dashboard, profile, edit post/current page, add new article, etc…
I saw that there are many plugins to remove the WordPress Admin Bar, but to be honest I don't really understand their purpose. The WordPress Admin Bar can be easily removed from the Dashboard.

Remove WordPress Admin Bar in WordPress 3.2.1

1. After logging in to the blog, go to the bar “User” > “Edit My Profile“

2. In “Profile“, sub “Personal Options” uncheck the box “when viewing site” from the right “Show Admin Bar“.

3. Click pe “Update Profile“.

You can also activate from here Admin Bar for Dashboard. I don't see why someone would do this, but the wordpress offers this option.

Another variant for deactivation of admin bar is adding the line <?php show_admin_bar( false ); ?> in functions.php (file in theme)

Stealth Settings – Remove / Disable Admin Bar in WordPress.