http://languor.us/hal-storage-fixed-mount-refused-uid-1000 1. Backup your existing /etc/fstab if you want to be cautious.
2. In Kubuntu, open system settings, click on the advanced tab and navigate to "Disk & Filesystems". If on a non-kubuntu KDE box, you can access this via KControl, System Administration, Disk & Filesystems. You will need to enter Administrator mode.
3. You should be able to see the newly added drive here and all its partitions (which are very likely disabled). Right click on one of the large partitions and select modify.
4. Under mount point, specify something like /media/test1 where test1 is the name by which the partition is to be addressed.
5. Check the "Enable at start up" and "Writeable" checkboxes as required.
6. Change Mount permission to Any user may enable/disable anytime.
7. Click OK and a prompt should appear asking if you want to create the mount point. Say yes and that partition should now be accessible.
8. Repeat for other partitions, if any.
edit: mám gnome, takže jsem to nezkoušel, ale mělo by to pomoct...