Disk Space Error !!

[aqrit39]

Hi (sorry for my bad english, I am French)
When I login to my CPanel, I see :

Sorry for the inconvenience!The filesystem mounted at /home/adulakun on this server is running out of disk space. cPanel operations have been temporarily suspended to prevent something bad from happening. Please ask your system admin to remove any files not in use on that partition.

And when I want to upload something with FileZilla :

552 Disk full - please upload later

What's happened ?

[Zubair]

This issue is sorted now. Please check again.

[aqrit39]

Sorry, but... :
http://www.diigo.com/item/image/21p45/og05