I think i found out what was causing my server to suddenly lose space. There are a few logwatch scripts that are now running at startup that never ran before, they are also slowing down my server by a lot. Once i killed them my server immediately started to respond faster, etc.
The scripts in /etc/log.d/scripts/shared/ that are running are 'expandrepeats', 'removeservice' and 'applystddate'. What are these for/doing??
Is there any documentation on Logwatch stuff?