drush

I ran into a WSOD on a Drupal site and checking the Drupal 7 log showed me the following:

Installing Aegir 2 on a fresh install of Ubuntu Saucy in a Virtualbox, I ran into the following message:

To fix this run, sudo mysql_secure_installation and ensure that you remove anonymous users. This should do the trick.

I upgraded the Mollom module on this site from the 7.1.x version to the newer branch of 7.2.x and ran into a White Screen of Death (WSOD). Checking the logs pointed me to the Mollom error:

It's tough to fix this as you might not be able to even log into the site to get to the admin page. Therefore, you will need to disable the module from the database.