cPanel and disk usage count

Hi:
When logging into cPanel, I noticed the "disk usage" column is increasing about 5-6 megs every day, even though I haven't uploaded any new files to the server during this time. Does anyone know how this could happen? Mail server has also been disabled, so it can't be mail that's taking up more and more space on a daily basis.

Thanks,

 

 

 

 

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