Jakob Flygare
You need to change the setting 'Country Locale' with the value for danish. (Host dependent)
Go to administration and to: Site->Global Configuration->Tab 'Locale'.
Change the 'Country Locale' from en_GB to a danish value.
Here are some different values of which one will probably work:
da_DK.ISO8859-1
da_DK.UTF-8
da_DK
da-DK
da
ot2sen
