Hi if you look at the img it appears virtualmin is reporting incorrect quota usage the total space used is less than the server administrators usage the dashboard also reports 4.29 GB for the domain in question quota returns

Disk quotas for user nod (uid 1007): 
     Filesystem   space   quota   limit   grace   files   quota   limit   grace
      /dev/vda3   5176M   6144M   6144M           62660       0       0   

du on the home directory returns 1.9G where do I start to look for the missing files owned by the user ?

Virtualmin version: 
Webmin version: 


This could be caused by files owned by the domain's user, but not by the group.

You can find them with a command like find / -user domain \! -group domain