[ltp] Disk damage?

[Ch. Veith]

Hello,
I got a strange morning today...When I was booting my R40 I was 
wondering why my normal-user could not login to X-server, but root could!
I thought that it might be a matter of diskspace and called df -h. It 
told me that that 0% were free - so I removed about 1GB to another 
machine. After that I called df again and still got 0% !!!
After some testing around I removed another 2GB, and got the following:

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda2              37G   33G  1.7G  96% /
I'm not too good in maths, but....

So I called fsck.ext3 which told me, that 7.5% of my disk were 
non-contiguous. Are these 7.5% the missing 2GB ???

Thanks for illuming me..
Chris