There is also a problem with the display of headlines in norwegian. Letters Æ, Ø and Å does not display as letters, but as strange signs.
I had the same problem with ä and ö. I have the news system on my front page which uses PHP. Other pages on my site are HTML. In HTML pages the UTF-8 charset worked with ä and ö but the PHP page didn't show them correctly with UTF-8. So, I changed the PHP page's charset to ISO-8859-1 and it worked. The ä and ö were showing. Everything went fine until I added the N-13 News to that PHP front page. Otherwise the ä and ö were working on the page but not in the headlines of the news.
Sollution: I use notepad when I edit the pages. The index.php had to be saved as in "UTF-8" coding instead of "ANSI" in the worpad. After doing this to the index.php both the news system and other part of the page started to show ä and ö correctly!
Hope this helps you :) And I also hope that the text here was understandable :D