no longer access to external HDD with KDE 3.5.4

[Johan]

Hi all ...
After playing with Ubuntu 6.0.6 for a while, i decided to give Kubuntu a 
try. I had a cd with Kubuntu 6.0.6 with KDE 3.5.2 .
Installed this, everything goes fine.
I decided to do a upgrade for KDE, i used
sudo apt-get dist-update
After rebooting, i whas running KDE 3.5.4
However, seems i can no longer access my external hard disk.
This disk is 200GB and NTFS formatted.
Under Ubuntu and Kubuntu (with KDE 3.5.2) i could perfectly read and 
copie files from this HDD. After upgrading to KDE 3.5.4 the disks shows 
a lock, and i can't read from it.

Any idea whats wrong here?
And, please bear with me, i'm a compleet Linux newbie (shame on me :) ) :(

Greetings, and thanks for any help,
Jo5han.