After upgrading to version 5.20 I no longer have access to admin pages. In firefox the page after a while turns white and IE says "Internet Explorer cannot display the webpage".
I read from this ticket (http://serverfault.com/questions/13139/drupal-admin-section-page-not-found) that I could try script the SQL database with this call: "update system set status=0 where name='update'", but am not sure if this is the correct method.
The site is working if I do not enter admin pages, however prior to the update I set the site of for maintenance.
Any suggestions on what to do?`