Suddenly, while I was working, the admin bar (that by default appears at the top) has appeared on the bottom of the page and it is unstyled, it is simply a list of links one below the other.
I've checked both header.php and footer.php and all seems to be at the right place (wp_head() and wo_footer()).
I'm using the last stable version of WordPress (3.1.3).
What could be the problem?
Thanks