Forum doesn't quite work when not logged in.

Is it just me or is there something going on with the forum?
If I'm not logged in I can get to the "home page" where I can see new posts in the left column but if I click on anyone of them all I get is a blank page. Same thing if I click "What's New" at the top. I can search the forum and get presented with the usual (more or less relevant) results to my query but if I click on one of them all I get is that blank.

If I'm logged in it seems to be working though.

/Henrik.