I have my own hosted wordpress blog with hostgator. In my WP admin panel for the blog I went and changed the WP address (URL) and blog address (URL) under settings - general. I was just screwing around with it to see what it would do, and now it won't let me login to the WP admin panel anymore. I changed it from i.e. happy to happier. When I go to the login page mydomain.com/happy/wp-login.php? and enter my login info, it changes to mydomain.com/happier/wp-login.php? and says error, invalid user name. How do I fix this?
Give this a try. Log in to your phpMyAdmin and find the mySQL database for your Wordpress installation. Find the table wp_options and the field siteurl. Change it back to the correct URL. Hope this helps