I am using Plesk 7.1.6 /RedHat ESL 3.0 on one of our servers and i don't seem to find a fix to this problem on Plesk forum so i'll try here.

Disk usage is not reported correctly by Plesk, For example:

a 100 MB domain is reported by Plesk to be using 70 MB but in fact it's using 140 MB

So i can't ask the user to clean up his/her files because the server is reporting the wrong disk usage

All disk usage calculation are included (Logs, DBs, Mail boxes, etc..), disk limits and disk quote are been enforced from the client/domain side

Any help would be greatly appreciated!