I followed the perfect serve guide here: http://www.howtoforge.com/perfect-server-debian-wheezy-apache2-bind-dovecot-ispconfig-3-p4 I now run Joomla 2.5.20 with Akeeba Backup on the server. And when I take backup with Akeeba Backup all my RAM get used up and the swap file is used also. But the RAM never gets cleared until I remove the backup file I created earlier with Akeeba Backup. I have attached an image from Munin which shows RAM usage. Even if I don't run a backup RAM usage seems to build up after time until there's no RAM left and it never goes back down again. Is this a memory leak, and if so how can I trace it?