A few Drupal Ubercart users have noticed that the Review order page keeps looping back to itself after they click on the "Review order" button. The Review page simply loads with all the information the user has entered. If you are facing the same scenario in Ubercart in your Drupal installation then continue to find out the fix.
Review order
If you have a Drupal 6 site where you have access to the ftp account but not to the user 1 credentials here is how you can login programmatially to the site as user 1 without resetting the user 1 password. Now that you know that this is possible, remember to not give ftp access to users who do not have access to user 1 credentials as well.