Comment 3 for bug 227753

I have the same problem, it's awfull.
I have a smb mount on my root partition and ubuntu says that my root partition is full.

df:

/dev/sda5 6000592 5799864 0 100% /
varrun 1557260 232 1557028 1% /var/run
varlock 1557260 0 1557260 0% /var/lock
udev 1557260 80 1557180 1% /dev
devshm 1557260 0 1557260 0% /dev/shm
/dev/sda6 102100724 76913448 20041660 80% /home
/dev/sda3 83208660 49632476 33576184 60% /media/vista
overflow 1024 48 976 5% /tmp
/dev/sdb1 972480 668544 303936 69% /media/disk-1
//192.168.1.20/Videos 464535688 304134728 146242724 68% /media/smb_videos

But it's not true, it's not full