WSOD afte uninstalling the Memcache module and deleting it's folder I've uninstalled the Memcache API and integration module from my site and then deleted it's folder from sites/all modules.

Then, my site was down, and a WSOD appeared instead.

I went to Drush and typed drush cc all, and then this came up:



Afterwards I restored the deleted memcache folder at sites/all/modules, and again typed drush cc all... Then the site came to work, but now when I run Drush I still so something wired:




Why I have a WSOD when I remove the module's folder if the module itself doesn't even enabled?...
How can totally delete the module?




Update for user - Les Lim:
One of the steps to install Memcache module is to add a line in your settings.php file that specifies a module file as a cache backend.

To uninstall the Memcache module, you will also need to remove that line in settings.php.  Until then, Drupal will be attempting to load a cache backend from a file that is no longer there.