Once actually it did work without being logged in. But it disappeared in some phpBB update. So thanks for that phpBB.

I perfectly agree. It would be a highly desirable feature. And the RSSbox things is sort of the best patch solution I could find at the time. Clearly not optimal. Agree.
Also the RSSBox feed is extremely slow on the updates. A more clear and direct list of new forums threads directly built into the front page would be desirable.
The problem is.. I'm not a programmer and doesn't have the insights as how to fix it or come up with a better solution.
If someones does. Please tip in.

Also for some reason phpBB is fairly terrible at keeping users logged in.
cheers
Jonas