If you have upgraded to WordPress 3.3 and the admin bar is not where it is supposed to be, it would be a good idea to check your function.php for the following code:

wp_deregister_script('admin-bar');
wp_deregister_style('admin-bar');
remove_action('wp_footer','wp_admin_bar_render',1000);

The above code is pretty common in 3.1 themes to permanently remove the bar from the theme. However, in 3.3, the bar still appears in wp-admin but it isn’t pretty. If you have a blank space for the bar but it isn’t visible, try scrolling to the bottom and see if you have unstyled bar items on the bottom left of the page. Then check your functions.php for the code above and comment it out.