Sometimes, this site goes down, and the following homepage appears:
The jos_session gets corrupted, a frequent issue with Joomla 1.5.x installations. Luckily, fixing this issue is quite simple, just log into the phpMyAdmin site (usually at the following address: http://www.mywebsite.com/phpMyAdmin) and open the joomla database
Locate the jos_session table, then click on Empty to solve the issue.
The state of the jos_session table returns to normal, and the Joomla website is back online.
