LinuxQuestions.org - New disks (RAID1), not enough space?

Hi

I recently followed this guide to create a RAID1
http://www.cyberciti.biz/faq/centos-...-create-raid1/
(I used 2 new 1,5TB Green disks)

First I partitioned the disks with fdisk

I made the RAID array with
mdadm --create /dev/md0 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1

Then I created the filesystem with
mkfs.ext3 /dev/md0

I then mounted md0 at /Video with
mount /dev/md0 /Video/

All according to the guide...

Today I made a samba-share out of /Video/Rorschach to easily put files in there from my windows7-machine (the plan is to steam from my CentOS-server to my HTPC which hasn't arrived yet).
I started to put movies in there. It went just fine for a while but then I got this message:
http://img525.imageshack.us/i/spacepy.png/

How is that even possible when df -h looks like this?:

[root@Rorschach Rorschach]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/VolGroup00-LogVol00
446G 70G 354G 17% /
/dev/sda1 99M 26M 69M 28% /boot
tmpfs 1.8G 0 1.8G 0% /dev/shm
/dev/md0 1.4T 57G 1.3T 5% /Video
[root@Rorschach Rorschach]#

Can anyone please help me? =)
(Running CentOS 5.5)

EDIT:
Ok THIS is wierd! I copied files from within the server (and not from Win7 to the server) and it worked. And after that copying Win7 --> Server started working again. I will continue and see if it stops again.

This doesn't change the question however... why did this happen?

EDIT2:
No... now it stopped again =(

EDIT3:
/etc/fstab was updated correctly. No problems there.

And also, I have "solved" it.
The samba-share is /Video/Rorschach. I cant copy files directly there. But if I copy them to /Video/Rorschach/New Folder and THEN from /Video/Rorschach/New Folder to /Video/Rorschach it works.

I have no idea why but I figured it has to have something to do with permissions. The permissions is the same all the way however (777)