Not redirecting/showing correct translated content

Hi guys.

I have an issue with a D5.15 + I18N module site.

it's www.colorcoating.dk - if you stand at f.ex. http://www.colorcoating.dk/da/autoriseret-brandmaler and choose swedish (which is selectable in the bottom) it sends you to http://www.colorcoating.dk/sv/autoriseret-brandmaler - which is still the danish page.

AFAIK it should send me to http://www.colorcoating.dk/sv/autoriseret-brandskydd-malare which is the registered translation for the aforementioned page.

Am I just wrong, or is this not a bug?

If you could point me to where in the module this is done I'd gladly modify the code, I haven't "messed around" in i18n module before, so I don't know how to f.ex. get the URL for the translated page.