Have you by the Sweden upgrade ? Or it is an US upgrade ?
It is the multilanguage upgrade (SLA-license), but I don't think that should matter, since the format is set to "Use System Format".
And it works great in FM 9.
If you create a new file with only a date field, wich format it usess ?
We have solved this by:
In Windows Controlpanel/International, choose another country, save, and then choose Sweden again.