Right after I have tried to change the current, so called, standard keyboard layout from USA to Norway, I get this message

Error activating XKB configuration.
It can happen under various circumstances:
- a bug in libxklavier library
- a bug in X server (xkbcomp, xmodmap utilities)
- X server with incompatible libxkbfile implementation

X server version data:
The X.Org Foundation
70101000

If you report this situation as a bug, please include:
- The result of xprop -root | grep XKB
- The result of gconftool-2 -R /desktop/gnome/peripherals/keyboard/kbd

Any ideas? I dont know my way around with US keyboard layout, and some of my Norwegian keys are not where they are supposed to be.

Thanks!

How did you change you layouts?

In the gnome menu, I went to "keyboard layout" and added Norway, and put it as default. But it just gave me that error message when I logged in and after I put it to Norwegian.

Is this distro built for non-english/persian users by the way...?

Sorry for this long silence.
Try to modify /etc/X11/xorg.conf file with your hands. Find a line with Option "XkbLayout" "<something>" and make it Option "XkbLayout" "nr,us" (if nr is the proper two-letter code for Norway).