When the phpMyAdmin link "Log out" is clicked, the user the sees the browser's pop-up login dialog as a result of the "401 Authorization Required" packet that
gets returned to the browser (packet 7). However, the same username and password used for the previous login now fails, and after three attempts (pkts
17, 28, 39) the browser sees a final error stating "Wrong username/password. Access denied".
After the failure, the user can delete the query string from the browser's URL field ("?lang=en-iso-8859-1&server=1&old_usr=admin), then
and will be allowed back in to phpMyAdmin with no prompt for username/password and the browser connects using the previous user's
credentials (pkts 50, 53).