[support] Access denied: You are not authorized to access this page - problem.

Hello, I'm installing drupal 5.7.4, using MySQL 5.0.24-standard, PHP 5.2.0. I've followed the installation instruction, until it sent me a mail saying admin, You may now login to http://localhost:8080/drupal using the following username and password: username: admin password: *thepassword* http://localhost:8301/drupal/?q=user/1/edit When I go there and try and change anything, e.g. the admin password, every time I submit it comes back with the "User Login" page and:- Access denied: You are not authorized to access this page. I can click login and it lets me in but nothing is changed. Anyone have any ideas, Cheers, Dave.