Disk usage shows wrong size

diskspace
quata

#1

The disk usage widget shows wrong usages this is what shown on admin account

this is what shown on user account

The usage size given is wrong the admin accoujnt already used 85 gb and its shown on the showusage command is there any way to fix this
Quotas is installed tried fix widget home and root many times when i try home it gives me your usage is nan% when i give fix widget root it gives me the above output