Well, lucero at the support forum to the rescue again! He suggests this as a link to a more friendly feed in WP:
http://www.eirikso.com/index.php?feed=rss2
…and it works perfectly well!
So, for the Atom-feed, this is the solution:
http://www.eirikso.com/index.php?feed=atom
Todays virtual bottle of champagne goes to lucero.
eirikso 