Scandinavian letters not working

[eluser]Vitsaus[/eluser]
So far I have good experience with CodeIgniter and it's natural way of working. Now I have ran into problems with Scandinavian letters, to be specific: ä,ö,å. I can't display them correctly and the way my site shows them is like this: "lisää random juttua" when it should be "lisää random juttua". According to the configuration, my site should use utf-8. Any ideas/fixes?