Well, i solved this one myself. Google should be the first try even at 4 in the morning ??
To anyone else experiencing this:
Apparently RSS only like a very limited number of special characters. Using feedvalidator it gave me the reason for it failing and suggestions on how to fix it. Now i replaced all the special chars (like å etc) with their numerical equivalences – and it works as a charm.
However – i still can’t work out why it has been working for two days ??
