Yes, it works with the swedish letters now, thanks to "mb". There are some more things to translate but I have been busy with my work for a couple of weeks. Anyone who likes to take care of this??
I am working on Swedish Language Pack v1.6 and can finish the last translations for 1.5 if you send me the file.
I have translated the entire front-end (not the admin part) to Swedish of the 1.6 version. If anyone is intrested I can share it with you, and perhaps we can work together with the admin part which is a huge number of strings :S
As a side note, i also have a payson module if any Swede needs it.