repquota is showing double the space used

[bambam82]

I noticed the following issue. My quota in ISPconfig is showing double the space used, in comparison with the check "du -hs".

Below you'll find my setup.

I have the same setup in a VM and there it works. But i don't know what is different... For all my sites it is showing double the space used. Below you'll find all specific for one website.

My setup:
Ubuntu linux 10.04.
/etc/fstab

/dev/md0 /               ext4    errors=remount-ro,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0 0       1

# mount
/dev/md0 on / type ext4 (rw,errors=remount-ro,usrjquota=aquota.user,grpjquota=aquota.group,jqfmt=vfsv0)

# repquota -avug | grep web19
web19     --  106388  153600  154624          13507     0     0

# du -hs /var/www/clients/client2/web19
50M	/var/www/clients/client2/web19

# quota web19
Disk quotas for user web19 (uid 5002): 
     Filesystem  blocks   quota   limit   grace   files   quota   limit   grace
       /dev/md0  106388  153600  154624           13507       0       0