Resolve : mCrypt not present after Ubuntu upgrade to 13.10

I think I found the solution at https://bugs.launchpad.net/ubuntu/+source/php-mcrypt/+bug/1241286
So:

sudo ln -s /etc/php5/conf.d/mcrypt.ini /etc/php5/mods-available
sudo php5enmod mcrypt
sudo service apache2 restart

This worked for me. Hopefully it will be helpful for other people too