Exporting a PDF as a text file, Word document or many other forms can result in broken text unless the PDF has been tagged to show reading order.
You may want to try a dedicated solution to converting PDF to something else. If you have Word, I would suggest using Nitro's online PDF to Word creator.
I've had decent luck with it where Reader and Acrobat have failed.
Since I am not allowed to edit the post, I just want to add that some Norwegian characters are not handled right either. å becomes }, Å becomes $.
That could hhappen if you don't have the exact font on your system.
Did you try PDF to Word?
I am not aware of any pdf to word possibility? (The same character problem is present also with Adobe X on Win7.) But as said, I don't think there is anything wrong with the system. I can use any editor, Visual Studio, FTP programs and others I can't think of right now, but my characters and fonts seems to be in good order.